I've been looking at quilt hoops on a frame and I noticed that many of them seem to have small bases and I wonder how that is going to support the weight of bed quilts. I would put some bricks or other type of weight on the bases to hold the hoop steady.
I do have a hoop that I travel w/ - it's a 29inch hoop and I would not use anything smaller. In a hotel, I will sit in the chair and hang the hoop off the back of the desk chair when i quilt. This hoop is old and i got it at an antique store. So, it's heavy duty and is wonderful. Not this lightweight stuff you see at Joann's.
For home, I have a 24x36 wooden frame that I bought at a quilt show almost 20 yrs ago and it is absolutely perfect. I've never seen anything like it online. The PVC ones at Joann's are similar, but I often wonder if they are sturdy enough.