The V10/12 seats are very similar.
The V12 is just a bit flatter on the bottom and a touch wider at the top. It just flares a little right at the top to give hip clearance.(maybe Oscar was predicting his present body shape)
The V12 is certainly much shorter in the leg length as I run it full length, but I have 2 clicks to go on the V10.
It also has lowered sides in the bum area and is far easier to me to remount. I think the greater secondary helps here as it is quite stable when you sit into it from the side, whereas the V10 has quite a small balance point to me in the same position.
I am quite happy with the V10 apart from the occasional weirdness that catches me out.
I think that a Fenn elit/SL is better in really difficult quartering and mult-idirection swell and wind. This is where the V10 shows it's weirdness.
Never really got the 12 into those conditions for an extended time to make a really good judgement.
I think that the time I spent in the 12 was comfortable and I paddled it in various directions to the swell, but the swell and wind were almost lined up so it was pretty clean really.
Previously I had spent time in the V12 in very short messy quartering stuff and I thought it was a real improvement over the V10, but I do take on board the comments above of just getting wobble overload over a long distance.
This I couldn't comment on.
I spent 20km downwind in it but it wasn't difficult conditions.
I did pass through some apoptic stuff between the island and the mainland and I thought it performed better than my V10.
The V10 has given me the willies in that same place, but who knows if conditions are really comparable.
I also did 17km or so in smaller less wind wobbly stuff where it was just chasing holes, and in that it performed beautifully.
I'd probably place more weight on an opinion of somebody that has lived with one for a while, I know that it certainly took me a while to tease out the real V10.
I certainly know that everybody has days when they just feel a little uncertain, and maybe in that circumstance, the V12 may be a handful.
But so far I like it.
Except for that stupid cockpit cover.
If they made it extend less towards the rear and have a proper attachment instead of stupid velcro and maybe round the rear edge that wants to attack you if you had a moment, it would be a huge improvement.
And just wondering, how heavy are you mckengmsurfski?