In reply to TomYoung:
I had the Zonsi and still use the Zopa, which is older. But they had a tad different uses.
Zopa and Mammuts in general tend to have quite tight woven shealts, so they feel more slick and stiffer.
The Beal was much softer and felt nicer to beging with... but it also was almost worn through after hald a season of nordic granite. Generally I got a season or two from single ropes here, so the Zonsi did not fair well.
The Zopa has been mainly used for euro limestone, were it fairs well.
So I would pick the Zopa over the Zonsi... Edelweiss might be better, but can't say as I don't recall owning one (or infact I think I do, might be my newest single rope... but haven't really put it for it's paces so can't comment on it yet).
As for single ropes and multipitch... sure, you're limited to shorter abseils, but I seem to recall most pitches in UK are newer much longer than 30m anyway... so you should be good... And to be fair, if you don't need to climb every single line, then most of the time a single rope is good enough (even on grit). And for shorter crags, double it up and you have doubles.