In reply to ian1234567:
Just to maintain the Mammut bias... I have a 9.2 mm Revelation (70m, dual colour), and it is a lovely rope. Good specs, great soft handling. But crikey does it feel thin. Not in a dangerous way like, but it definitely doesn't feel like a workhorse.
A friend of mine has the Infinity, and the 0.3 mm makes a huge difference to my perception of its robustness, believe it or not (and that seems ridiculous seeing it written down, but there you go!). I'd be happy to work routes on the Infinity and would gladly drag it around on a trad route. I'm not sure the same could be said for the Revelation... However, I don't think the Infinity is the nicest handling rope I've used. It's not as supple as some others, and the new shineyness feeling got somehow slightly rough, rather than soft. Despite that, I wouldn't hesitate to recommend it, and for £140 I'm having a really hard time not buying one for myself...