i'd be inclined to buy good quality, ideally top-quality tools when and as you need 'em rather than a set. Whilst some cheap tools are OK, if it doesn't do the job or munges up the work it's not a bargain. I'd also be inclined to get pukka-brand generic tools for things like cutters and allen keys, and reserve Park for the specialist stuff. One of my better buys, albeit extravegant was a buttock-clenching £70 set of Facom t-bar allen keys - ridiculous price but a joy to use. Standard l-shaped allen keys from facom, gedore, eklind etc are maybe £20 so not need to skimp even if the t-bars are bit much