Some interessting facts and side notes about all this:
--> Many parts of A800MMX (absolute latest model) are still same/similar/useable for A700 (very first ever model).
--> It was/is possible to upgrade the A700 (from first model on) via update parts step by step till A700 EvoII.
--> It was/is possible to upgrade the A800 (from first model on) via updated parts step by step till A800MMX.
I know some racers arround here which bought the very first A800 version, and upgraded always in small steps to later specs.
Some even have now an A800MMX by upgrading continuously - and didn't buy a new kit in between.