I would definately give the ss a look if I was you. I just like trying different stuff and picked one up a couple months back and it was superb until last weekend and I got hit head on by someone coming into my lane and I'm chalking it up to loosing a piece of glow plug element into the combustion chamber. I will still run it for a practice motor but I will be buying another one. 4 gals and not the first hiccup before this happen. I just thought I would take it apart to inspect it after 4 gal and I found it had lost the element from the plug that was still installed in it. Still has great pinch and runs awesome but I wouldn't trust it for a big race. Just because peace of mind. And for the record I have ran everything on the market besides rb engines and this one is just as good as any of them.