One more vote for the Edge 705.

I got one as sort of a late Christmas present when DH decided to update his 305 (also great - has sold it to a friend) so have only had it a couple of weeks.

I'm just loving it! Truly everything it was cracked up to be!

I bought it in Oz so have Oz topographical maps on it as it came (really pretty ordinary maps for navigational purposes) but have also downloaded some maps of the local MTB trails in our state forests and some more detailed street maps. They all overlay each other and I am finding I use it more and more for navigational purposes.

I really like the software you can download for it - Garmin Training Centre - which is stand alone on your computer. It allows analysis of all your stats etc. I also upload to the GarminConnect site (I think it replaced MotionBased for the later products) and it does the nice superimpose on GoogleMap/Earth thing and allows you to share your rides etc. But I find it doesn't offer the same range of analysis you used to get on MotionBased or on the Training Centre software. Maybe I just can't drive it so well yet!

But Yep - one more vote! And it was only A$555 so surely you'd get it in your budget!