Couple of quick points/review vs the 705.
Boot Up - 200 is very fast, as is GPS lock. 705 takes a while to boot.
GPS - seems just as good as 705, OK doesn't have the speed/cadence sensors
Auto Pause - works fine, does 'pause' before the 705, but that's probably down to the 705 getting inputs from the speed/cadence sensor telling it it is still moving. The 200 shuts down as speed drops below a set speed.
Autoshut off - nice feature - shuts down to save battery. Seems to charge quickly too.
Makes exactly the same noises as the 705.
Route/Course - I think it can follow a crumb trail - someone will have to confirm as not sued it yet, but options look like it can.
Down side - lost cadence reading - my cateye had this. Plus side, no sensors on the bike. 705 has the cadence.
It's a cracking computer for £130, but at the discount it's a no brainer.