I use the studio tech modular racks. Future proofed, $199 shipped. I bought two, split em up, made one small one and one large one. I opted not to use the wire mgmt backs, so to speak, and also do not use the posts on the very bottom, and screwed the "feet" directly into the bottom shelf.
I recently saw my friend's studio tech rack-mountable type rack (what's the correct name?), and if I shopped all over again, I might splurge a bit more for that. Not sure, actually. Good luck.
Oh, parting shot, if you do an upright rack, add long HDMI cord for say $50, URC remote system $80, then you can pretty much hide your components anywhere. Even the closet.
Assuming wall mounted display:
The biggest side benefit, IMO, is that by not having the components up front, you could have three identical speakers on the same plane, vertically arrayed, no lights to distract from immersion, along with the ideal front stage. Hardly costs anymore, and sometime less depending on the cabinet that someone might buy.
It would be a great first step in a setup. In fact, maybe the best first step one could make in setting up an HT or mch music system.