I'd buy whatever looks good to your eye and matches your listening room. Make sure its solid and can support the weight of the gear you want to use. A rack should not have any effect on the sonic performance of your audio system whatsoever. If you have vibration issues, you either have a poorly assembled rack or gear.
Component racks
I am putting together a tube system and need a racking system for two turntables, and 5 tube components (pramp, 2 monoblocks, phono preamp, and cd player)and surge prtector. The only thing I know about racks is they come in a lot of flavors and can be very expensive. With tubes, they will more than likely have to be adjustable. I have two svelte shelves and two amp stands, 3 X 3 still points, 1 X 3 roller blocks and 1 X 3 roller block jr. that I am using with my current system on a wood entertainment system. Reading forums and threads has left me confused. I am open for comments and suggestions. Thank you.