I've owned Rolleicords, Rolleiflex, Yashicas, Autocords, etc. Lots and lots of TLR's. The Rolleicords are lighter and smaller, and have excellent lenses, even the lowly Triotars. The Autocords have great lenses.
But for image quality and small size, the best was a Voigtlander Brillant w/ an uncoated Heliar lens. I'm still kicking myself for selling that one. Diminutive size, 1/500 shutter, and easy to focus (kinda) w/ a new mirror installed. A little Bakelight TLR that blew all of my other MF cameras away in terms of image quality, regardless of price and lineage.
I used to send TLR's out for CLA's, but not anymore. They're very simple box cameras really, and unless something is wrong w/ the wind mechanism, fixing them is something I'm capable of.