Hmmm... some fairly negative feeling here! Personally, i quite like Coinex - and significantly more now its back in central london rather than western copenhagan! (ok, eXcel center - but close enough!) I tend to rock up on Saturday morning (for the free entry bit) with maybe £200 on me, and wander round chatting to and getting to know dealers... if I see something I fancy, I'll have a punt! It can be a bit crowded, but no worse than the supermarket at the same time! Granted I live in Slough, so its 45mins train/tube or 60mins train/walk to Grosvenor Square, so that removes a fair amount of pain! Hey ho, each to their own! Given that you seem fairly local to the big smoke, so i figure it must be worth one try!