I actually liked the look and feel of the A700. It is compact, well-built and to my mind better looking than the S600, S555 or the butt-ugly X650, which looked like a couple of dog's testicles hanging off your chin.
As far as I am aware, all the MK25s that come with the A700 have TIS, as you definitely need this in the UK for the cold water, and the existing top-of-the-line, S600/MK25, comes with it in UK territories.
Frankpro1, the Aqualung Legend LX is a great-performing, decent-looking reg, but the second stage is still only plastic with a gold-coloured metal ring stuck on the front, what made this really stand out in bling, bling terms is the mega-chromed finish in both the second and first stages. This thing really gleams!
Mark