I live in an apartment building currently, so I don't have the leeway to mount any training equipment. The gym I go to does not have a double end bag. I would really like to train on one and after doing some research came upon the freestanding reflex bags. Does anyone here have any experience with these? Are they slow? Do they hold up or just break apart? How would you compare them to a double end bag? Just would like to see other people's experiences before I commit to one, and I have a feeling many of the reviews on the sites are less than truthful. Any recommendations are welcome.