I do wonder about the Akto. I've seen plenty pitched over the years, and not one has looked the same - different heights and/or widths across the pole, end walls sloping in at differing angles, often flappy loose fabric. A month back, Cairngorm Mountain Sports in Inverness had one pitched on their floor - pitched 'right', you could just tell. Out of interest, I got in for a nosy, and was pleasantly surprised how roomy it was (I'm 6'4"). It was certainly much less claustrophobic than the Macpac Microlight.
I have the Argos Hike Lite 1 (formerly known as 'Tiger Paws' and green not orange) which is the same design - just cheaper materials and more mesh inside. (Search this site/google for extensive info on them). Haven't used it for a couple years as I have a Tarptent Scarp 1 (which would definitely be large enough for you).
I'm 6' exactly and borrowed a Laser Comp recently to have a look. I found it bearable, but too short for my tastes, but, I have been spoilt for space by my other roomier tents!
If you live in Devon you are welcome to try out my Hikelite!
Mine: (You can see that the legth at head end tapers down fairly low - but it is long to that point)