I use this one. Won’t break the bank. After adding the better cutting bit and 17mm adapter it was over $300. But still not bad. Out of stock now but keep an eye out.I’m going to be investing in a truer or find a used one on eBay still lookin around
I ended up going with BSR since it’s what the fastest is running
I also found some SP foams for 1/8 GT on eBay from an overseas seller I remember SP being a good brand from back in the day and SH40 I think would hold up well compared to purples but to be determined