I hope you're happy with your new clubs! It's always great to have shiny new stuff, and I understand your reasons entirely.
Just in case, though, anyone else is reading this and finds themselves in a similar position it's worth pointing out that 2nd hand clubs per se often offer tremendous value, when bought off Ebay or wherever. Sometimes you will find
extraordinary bargains (A guy at my club got a set of
Ping i3's, Scotty Cameron putter, and
Ping woods for £100 - about $190) but that's rare. Even so, you can pitch yourself further up the 'gear scale'.
2 thoughts;
1) It'll probably be a while before you're aware of the difference. It's not so much that the diffreence won't be there, just that you won't necessarily notice it
2) Old gear isn't necessarily bad gear. Yes, technology moves on - perhaps more so in drivers than anywhere else, but even on the pro circuit, there are people playing with much loved older gear. Until recently, Lee Westwood was very much a case in point. Bill Reed plays the golf of my dreams with older clubs that he loves and is used to. 5 year old technology is neither here nor there - what matters is how it feels in your hands.
To use the wrong phrase in the wrong context - it's not the size of the boat, it's the motion of the ocean, as it were...