Not better, just different - on a hybrid and especially on a roadbike (different mechanism). The Sirrus Ltd has SRAM
Yes, good rep to Planet X as far as I know, British Co (unlike Specialized, US mega-brand, who I always think are overpriced).
Dunno where you are but Planet X are based in Sheffield/Rotherham or similar
I don't know if the bike is for communiting - need to check whether mudgaurds, rack etc can be fitted easily if needed
If I had that sort of budget and not totally hung up on all carbon, I'd also get me a test ride on a Whyte Sterling
