[quote name='Geordie Mick in Wigan' date='13 March 2010 - 07:55 AM' timestamp='1268466908' post='983318']
I wouldn't bother, the sat nav/stereo head unit is a £1200 part alone, the sat nav isn't bad but nobody seems to be able to update, the HD music unit is absolutely rubbish and the reverse camera is about 10% as effective as acoustic sounders, it can only view 60% of the rear bumper and once there's a bit of road grime on it it's useless. I paid the £1500 option for it and wish I hadn't of bothered.
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I'm sorry you're not happy with the equipment fitted to your Avensis, Mick, but I am very happy with the kit fitted to my Prius.
I think the HD is great

, lost count of the number of CD's I've put on to it now
I find the rear camera, especially the guide lines, very useful.

Plus it seems to cover most of the rear bumper on the Prius

. Has for it getting dirty, well even in the worst winter weather, I was still able to make out a useful picture, so no problems there.
But back to the original posters question, would I retro fit this equipment...no.
For the cost, time and hassle buy yourself a good TomTom and an aftermarket camera kit and save a pack.