F10s are indeed an iconic tent, thats done the biz for decades. I well remember putting one up on GT Langdale campsite in the pouring rain for my girlfriend and her friend, that was 15 yrs ago. Although she says she hates camping, my now wife still fondly recalls that evening of chivalry...
As far as geos are concerned, the Quasar is also an iconic tent. I remember lusting after one over 20 ys ago,. Had a SQ until quite recently, but am now looking out for a Ultra Quasar (lighter)
Both stonking tents.
I think there will be good reviews of the helium (in comparison with the Akto ) in a few years time. (not trying to provoke debate, just my opinion.)