Free standing boxing bags

Does anyone have any experience with these? I know that these aren't as good as normal boxing bags but I have no where to hang a normal boxing bag. I've tried to google reviews but there's not many out there. I've heard from a few people that they break easily but I don't know if that applies to me. My punches aren't that strong since I can only bench around 65 kgs.
I'm looking at the stronger types of free standing boxing bags like this:
Max height: 170cm
Punching area: 110cm X 33cm
Base: 60cm wide.
Approx Base weight with Water: 80kg
Approx Base weight with Sand: 110kg
Do you recommend a brand either?

 

There are quite a few on amazon if you search there.

Here is one that was pretty well reviewed: http://www.amazon.com/Century-10152...dp_top_cm_cr_acr_txt?ie=UTF8&showViewpoints=1

 

Thanks for the feedback. I saw a few good reviews on the wavemaster xxl, so I'm most likely going to buy that.