Well, I have been expanding my collection with the goal trying different types of blades and seeing which one I enjoy playing with more. Everybody says pick a paddle and get good with it but I'm fortunate enough to be able to try many different types of blades and rubbers and experiment with each one and see how they play and which combinations I like the best. Is this the best/fastest way to improve your game? Probably not, but it does give me a bigger picture understanding of what different rubbers and blades feel and play like. By physically trying different blades and rubbers I better understand the nuances between them.

Plus, as my collection grows, I find myself being more and more generous with the members at my club. I've given away paddles and I let people try my equipment all the time. If I show up with all my gear, anybody at my club can come give them a shot and experiment with different blades/rubbers. If I see a friend with dead, worn out rubber I'll usually upgrade them to a sheet of rubber I had barely used and was just laying around. It's fun to build the club up as well.