This is so individual Gav. I was with Col on Sunday and we looked at the three 42ft'ers together, one after the other without anything inbetween.
Out of the three, and this might be a little bit of a shock to some, I would undoubtedly have the Fairline over the Princess and Sealine - Col, as hes said above would have the Princess. I thought the layout, build and finish quality was vastly supreme on the Fairline. I'm still not a fan of the slab Sealine design, but as I've said many times before, maybe in time I will change my mind - just as the masses did after Sealine introduced their market change years ago.
On older boats, as you would guess, I am Sealine through and through. They fit a 38ft boat into a 34ft shell and when I purchased Job Done, I couldn't find another boat that fitted my requirement for the money anyway near.
The Birchwood you are looking at is lovely of course, certainly a lot of boat for the money, but as I've said - the choice is very individual and I would opt for the S34 instead. However, from what I have gained from our many conversations regarding this I understand why your first choice is the Birchwoo !
BTW I was talking to Guy (EBY's) on Saturday at the BS and he said that they have to do some work on the S34 prior to sale. Didn't get much more info out of him though..