I find Cabelas has high quality equipment that will last a long time however it is usually expensive and heavily constructed. They have this model in the store I recently visited. It has quite a few good reviews on the site.
We originally purchased a similar "first generation" model from a different manufacturer which worked fine but this Outback one has some nicer features, especially the removable floor...that makes it much easier to dry it after using it as a shower. It also has exterior towel hangers, etc. The support "poles" system looks similar to the one you mention...
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Jack
'01 Ford EB50p Quigley 4WD
I have one of the Cabela's. It sets up very fast with one or two integrated poles, stakes down, but takes five or ten minutes to wrestle back into it's flat carrying bag. Total cost $29.95.
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2006 Baja Tan SMB 4X4 EB50 PH 6LPSD
Mohawk Royalex Solo 14 foot canoe (light white-water)
Mad River Kevlar Explorer 17 foot canoe (flat water)
Dagger Royalex Legend 16 foot canoe (white-water)
Maravia New Wave 13.5 foot raft (fishing and white-water)