Racks are great on one level and poor on others just like everything they certainly do not solve all problems magically.

They do save space tons of space.

I spend the same amount of time cleaning my rack as I do enclosures. There is no spot cleaning a rack just change everything and monthly cleanings are a right pain, the top of each shelf is a nightmare to clean, I have taken to flipping the whole rack upside down to do the underside.

The cost is a bit less in the short term but more in the long term they are very very poor for holding in heat so the result is you either need to heat the room or heat the rack somehow (cool end)

The keeper makes the captive environment correct not the rack it can be set up just as poorly as a enclosure.

I am not trying to talk you out of a rack just keep your eyes open to the reality of it, there is no just get a ___ and all your problems are fixed. The reality is get a ___ and have new problems. I like my rack I also like my enclosures and the rack took much more tinkering with to get temps correct.