Both racks look nice and have functional designs. I'd probably lean toward the PVC because of light weight and modular design. But... With that said I would not want either guitar rack "in my studio". Maybe I'm hyper critical of ambient sound, but a bunch of guitars sitting in the open where anything going on in the studio such as mic'ed amps, anyone playing drums, acoustic guitars or a singer would cause the strings on the instruments in the racks to vibrate thus potentially finding their way through an open microphone onto the track is not something I'd want to deal with. I guess one could make an argument for a guitar rack in an isolated office space, but in the open studio,

not a good idea IME. Of course I think of "studio" as a place were recording takes place, if you usage is more in line with an "art studio" where beautiful items are on display, then the rack is a good idea. My $0.02 & YMMV