The Comet board is quite different, narrower and quite a bit lighter. But it is not much harder to ride, of course it prefers to be in the air and faster touchdowns, but it sounds like you would be ready for it.
If it appeals to you, go for it.
As you tested and like the T60 this is a good option too obviously.
Sounds to me that you can not go wrong, either or.
By the way, shortly there will be a new glass version of the T60 next to the current Carbon version. Another economic option of this modern shape, priced in the middle between T40 and T60 Carbon.
Hope this helps a little.