Using my EVH bumblebee. I installed a super distortion and upgrades the floyd rose with big brass block, noiseless springs, stainless steel screws and titanium string blocks.
I'm thinking about installing sperzels on my aged R9. I plan on keeping this guitar and not worried about resale value.
I have sperzels on 3e of my other guitars (Warmoth, Explorer) and are my favorite.
Not sure if they will be locking or not. :hmm: