Then I have a cheap suggestion for you:
Clean the bearing. The Speed Maker will become unresponsive. Trust me, well worth the effort and it’s a skill you need to learn anyways. Worked great for mine. That and my Kickside shipped just with too much lube in the bearings. Once completely clean, I Terrapin X treated them, they play amazing!
Your next upgrade should be maybe a Legacy II, because it gives you the option of responsive vs. Unresponsive play. The DM2 would be a better choice.
If you’re into unresponsive play only and are ready to jump into binding(sounds like you are, btw, and way to go!), more options open up. Many of the Shinwoo Zen’s, dv888 and maybe some other stuff. The Duncan Metropolis, Echo and Raptor are all fine choices. The Metal Drifter isn’t necessarily a model to avoid, but for what you’re willing to spend, you can do better, but it costs better.
Staying more affordable, The Protostar and Northstar are really amazing plastics to not be overlooked. The DieNasty and PGM are options you can explore. If you just gotta be cheap(and not in a bad way), the PSG and Asteroid should be on your list of things to seriously consider. Heck, even the stackless grind machine is really a ton of fun and at $12, well, wow!
But, the Speed Maker is nice too. Don’t be so quick to replace it. I’ve been playing my Lyn Fury a lot lately.