Bintel and GSO are the same scope just rebadged for Bintel. Saxon and Skywatcher are the same also. Really what you are looking for are price for aperture and what goodies come with the scope. Don't get sucked in by thinking it come with lots of eyepieces. The EPs supplied are OK for 25mm or longer, just usuable for4 about 15mm, and junk if 10mm or below.
I have the GSO/Bintel and think the tensioners are just fine. They have the added advantage that you can adjust the balance point up or down so once the scope is balance you don't need a lot of tension to hold it.
Malcolm
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