Not only have they hosed the reputation of the brands they've bought, but they're diminishing their own as well. I know it's nowhere as popular as the ThinkPad, but I have been a ThinkStation fan for years. I bought my first one in 2005. I bought another in 2014 and the new one was an identical case with different components inside and a few different labels outside. I was blown away by this because it's exactly what I've always wanted -- I don't care at all about the gimmicky chassis updates -- and I told everyone about it, probably resulting in a couple other people getting one. Unfortunately, I won't have a chance to reproduce this experience as they discontinued the model and no longer seem to have a comparable machine.
I started out building my own machines because that was how you did it to save money and get good components, then vendors eventually became good enough where that wasn't necessary or desirable, and now we've come full circle and it seems likely I'll build my next machine, whenever this one finally gives up the ghost.