Better
I followed your final advice (tbh, I'd already done it, sorry for not waiting for your approval) and have since found the phone generally more responsive. It's also good seeing in iTunes the amount of memory taken by apps, why has no-one mentioned this yet?
Still really poor on 3G, but is it Apple's fault i live in the middle of Wales? I suppose that's the trade-off for living in the happiest part of the UK.