RPM cranks - review? I know some of you have 'em!

hippy With postage, it'd be cheaper if I could pick up from kiwicycles.
I would prefer used but good condition ones.. but if I can't find anything old quickly I will have to go for these or the on-ones. Can't be doing this Tube shit!

Why can't you do this 'tube shit'? If this has something to do with picking up your frame from Witcombe give me a whisper - I think I can help you.