Aye, well there's the rub. We go through this every so often - folks pining away for old eqipment / limited # of clubs / etc - but the problem is you do just kill yourself competitively if you go this route, so not many stay with it long-term. We all know also that this game is plenty tough enough without purposefully making it tougher...
I used 7 clubs for awhile a few years ago, following my role model Dan King. It was very fun for the short term. But after awhile my wallet couldn't take the beating any more, and switching from half set to full and in between just became more of a problem than a help. That is, you'd think I'd be a better player having to learn all of these creative shots using 7 clubs... but you'd think wrong. The end result was paralysis by analysis in an odd way... thinking of TOO MANY silly ways to hit any given shot rather than just hitting the damn ball with a full swing.
I do still like to take out the 7 club set, from time to time... when I can play the game, that is... but over the long haul, as long as competitive play is still a part of my golf repetoire, I'm always gonna come back to the full set.
And that full set is as full of modern technical help as my budget can afford, you better believe it.
TH