I purchased a handful of these connectors while I was in the process of stripping down my pedalboard to the essentials - the first reason was to reduce the amount of cabling and make everything as stable as possible, the second to allow a comfortable distance between the pedals (I have pretty large feet).
These Planet Waves connectors are really well-made, sturdy and elegant. I'm not entirely sure (could just be my mind telling me this) but I also think they made the sound a bit better overall. Even if they didn't, the result is in no way sonically inferior to that of patch cables.
One other thing worth mentioning is that rigid pedal connectors are subject to the problem that the pedals' jack sockets are not 100% straight, as almost all pedals have slightly slanted walls. This means that connecting multiple pedals using even Z-shaped (offset) connectors results in some pedals not sitting flat on the board, placing strain on the jack sockets. But because these connectors have a very wide middle section (pretty much the only complaint anyone else seems to have about them), they compensate for this slight angle, at least with the pedals that I have (TC Electronic tuner, Dunlop wah, Maxon OD808, MXR Micro Chorus and Boss Delay). They won't work with mini-size pedals like the MXR Phase 95 Mini because the jack sockets are TOO slanted, but with full-size pedals, they're great.
I'm totally happy with these connectors on my board and I will definitely be keeping them.