Sportsmail gathered two Englishmen, a Welshman and an Irishman to discuss the Six Nations.
The panel consisted of England's World Cup-winning coach Sir Clive Woodward, Wales's double Grand Slam winner Martyn Williams, Ireland and Lions hooker Shane Byrne and Sportsmail Rugby Correspondent Chris Foy.
Sportsmail has gathered a group of rugby experts to discuss the Guinness Six Nations
Who topples Ireland?
CW: England. Can they ambush Ireland by doing something they are not expecting — and can they play quicker? They can't get dragged into a kicking tit-for-tat with Johnny Sexton and Conor Murray, because they will lose most of those exchanges.
Ireland are more athletic but Eddie Jones has picked a really exciting team to keep the ball, build possession and attack. They have a real chance.
MW: From scrum-half to centre, Ireland have big, strong men and if you give away penalties Sexton will punish you.
They can be beaten — France should have won last year but Sexton hit that incredible drop goal.
Wales and England have a chance but I can't see the others beating Ireland. They have a couple of injuries and the pressure is on — and Wales have them at home.
SB: The powerhouse in Irish rugby is Leinster and it's the teams that get in among them early that upset them. I don't think any team can beat Ireland tactically, so they have to go at them physically, upset them at rucks and never let go.
One of the main Irish traits is comfortable ball retention and they'll try to puncture that rhythm. Wales are probably best-placed to catch them on the last day.
CF: Ireland are beatable, but it will need a team to dominate them physically on the ground and in the air. Wales in Cardiff on the final weekend have the best shot, especially if Ireland have suffered casualties in key areas by then.
Can Eddie Jones win another title?
MW: Absolutely. They had a tough year but have Billy and Mako Vunipola back, as well as Manu Tuilagi, and on paper they look really dangerous.
England will take a lot of confidence from the autumn. The way they blew away Australia — a team Wales struggle against — was alarming. If they win the first game, they'll be difficult to stop.
CW: Yes. This is one of the strongest squads I've seen from England. Playing Ireland and Wales away is massive. I hope England build up the pressure on themselves. With three games at home, England are always my favourites.
Eddie Jones can win another title if his team can carry the momentum they got in the autumn
SB: No. They've still got a few injuries. The Six Nations is a strange animal in terms of momentum but after such a big slip it seems like a step too far. They're on a mini recovery but they're not there yet.
CF: There is no reason why England can't challenge for the title, or even — at a push — a Grand Slam if they are able to upset the Irish on Saturday. Jones has an unprecedented array of firepower at his disposal.
Can Wales give Gatland the perfect send-off?
MW: Wales are in as good a place as I have seen for a long time, having won nine Tests in a row. The Beauty of the side is that they are not over-reliant on one player.
Losing Alun Wyn Jones and Jonathan Davies would cause panic but they have coped without Toby Faletau. We're a funny nation. If we beat France, we'll be a different beast.
CF: Yes. There is an argument that, very quietly, Wales have established the momentum to be regarded as joint-favourites. The Principality Stadium is a massive asset and their primary rivals face uncomfortable visits to Cardiff.
There's no love lost between the Welsh and Irish and the final weekend could be pivotal
CW: Wales can win this thing. Having England and Ireland in Cardiff is vital but their dangers are away from home. They have to go to Paris and Murrayfield, which will be tough, but win the first one and they're on a roll.
SB: Warren will have a couple of things up his sleeve. There's no love lost between the Welsh and Irish and they'd love nothing more than to finish in style against Ireland.
Can Scotland win it?
MW: Scotland won't win it. I can't remember the last time they beat Ireland, Wales or England away, but they will be difficult to beat in Scotland.
Gregor Townsend just doesn't have the strength in depth — 20 are out injured — and that will catch up with them.
CW: We often stereotype teams. We say Scotland play quickly and don't have a scrum, but they do now scrum well and are well coached.
It is exciting times for Scottish rugby — they will go to Italy and win, and could be top of the table after the first week. Gregor Townsend has brought the feelgood factor back but Scotland need wins on the road to be taken seriously.
Gregor Townsend just doesn't have the strength in depth with Scotland to challenge the best
SB: I don't think they have a championship in them but they're a side that will take a lot of