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Does it make much difference whether I go for bolt on or center lock?
Not much. I prefer 6-bolt because it's simple and more widely used, so new rotors will always be cheaper and easier to buy. I haven't seen how centerlock holds up long term, but I'm concerned that a sliding fit spline will be prone to fretting which will destroy the expensive part (hub shell) just as fast as it destroys the disposable rotor.
gbj_tester-
Agree, not a fan of centre lock. Solving a problem that didn't exist.
I've got some boost spaced mountain bike wheels. The rear hub is an unbranded novotec I think. The centre lock spline interface is not 100% and so I get a little creak under braking. As boost is still new, any hub replacement is going to be ££££ even though I'm not fussed about swanky hubs.
Also, centre lock on alfine hubs can GTFO. I had three cassette lockring tools, non of which would work on an Alfine because of solid axel and nowhere for the pin on tool to go.
Zero problems with bolts for 15 years of mountain biking. Both my centre lock hubs have managed to annoy me almost instantly.
Scrabble
Good question. Normal QR I think. But I'll check.
I was thinking about something a bit more bling, but it's pretty hard to argue with c.£30 for a pair of Deore hubs.
Does it make much difference whether I go for bolt on or center lock?