oh well,too late now as it's being exchanged tomorrow.
was a stonking £400 price difference too!
i guess i'm too honest!!
i did try it as i didn't actually realise it was tab tensioned until it rolled out.(no mention of it on my receipt so didn't expect it to be different).
cant say i really noticed much difference but i must say i didn't like the outer curve it had to it when fully opened.(guess that was to do with the tab tensioning).
anyway,i's going back and i'm settling on the non-tab tensioned 1.2 gain model.
many thanks for your thoughts.
paul