Just get one that matches the furniture.
I dont believe that the choice of rack has much to do with sound quality, but taste in furniture and decor.
If you are worried about vibrations, you can get rid of those other ways than blowing a fistwad of bills on a rack.
Just look for something versitile and pleasing to the eye.
There seem to be alot of people that well go round for round stating hat you need a $1000 plus rack. I personally have seen no evidence of any sonic improvement with one rack vs another. Just make sure you get one with open sides that allows plenty of airflow.
Honestly, unless you have the extra cash and see something you think would look slick in your house, dont bother.
if you are that worried about vibrations, install some seismic bolts on the feet. its not too difficult to figure out how.
You can get these from Greybar. they make telecomm equipment.
For all of you who claim that the rack makes all the difference in the world, im curious as to how you think the rack affects anything other than cosmetics. Seriousl,y im interested, im not just saying you are full of ****, im honestly curious