Anchor roller
Gareth,
By now you know I have a bias towards performance-and my 2 cents on the issue is that for the 35-2 more than some other models, performance will be significantly affected by the weight of an anchor, chain, and rode up on the bow. The pitching moment will increase, so that in other than flat seas you will be slower with an increased pitching moment.
I would consider how often you actually use the anchor, and if it is rare, but you like the idea of a roller, maybe you could keep the rode and chain aft in a more centered location until you actually set sail on the trip on which you plan on anchoring (with just the anchor on the roller). Otherwise I would stow all my ground tackle as near the middle of the boat as I could (fore and aft, and low).
While this dynacmic is true for any boat (but to differing degrees), the newer 38, 35-3, and such can absorb weight in the bow a bit better than the 35-2.
I guess I see lots of boats with rollers and having the anchor, chain and rode up in the bow, while using the anchor 2-3 times a year. That is a lot of performance lost for something not often used. If you use it all the time it may be worth the price, though..
Food for thought.
Good sailing,
Seth