The basic £160 Aware won't do the route planning you mentioned. You will need the £45 Fastplan software (Windows only) to plan & then send the route to the Aware. If you want to draw a route directly on the Aware, you will need the £260 Aware Plus.
That's £300 to get the same route planning functions that you can get for less than £30 through MM.
What you're paying for on the Aware is its airspace database & its ability to give you inflight warnings if you get too close. You won't get that from MM.
Re iphone gps: one of the MM chaps posted this on the support forum at the end of January:
The problem with the previous version is the iphone would give a cell-tower position and claim it is accurate to better than 100m. Then a few minutes later it would get GPS fix, giving a sudden jump in position, often by more than 100m. This caused zig-zaggy track logs, and wildly inaccurate estimates of speed and direction.
In this version we found a way of determining when it is actually a valid GPS signal, and we are ignoring the cell-tower-based location reports.