I'm lucky enough to have snagged some older collector-"used" practically new MPs (Takara Laserwave & Prowl, Hasbro Soundwave) by visiting nearby toy stores, but new MPs look so fugly and are so expensive that I'm interested in trying out MP-scale 3rd party stuff rather than pursuing official releases (other than MPM figures, but that's another story; slavish accuracy to something with a real vehicle mode gives much cooler results than slavish accuracy to a cheap-ass cartoon with a plethora of animation errors, and I'm pretty happy with the quality of an MP Blackout I found on sale).
Is anyone willing to share their experiences with different 3rd-party brands? I own a Planet X Thundercracker that I purchased on deep discount last year, which had no QA issues but that scares me a bit due to the miniscule size & stress of some tabs in the torso, but beyond that minor experience I'm entirely out of my depth on the QA histories of 3rd party companies, and I don't trust 4chan's /toy/ thread on the subject to not be full of shills and idiots. A cursory search reveals some praise for Mastermind Creations, but even that "recent" mention is from 2021, and I'm wary of accepting old recommendations.