Please advise again 2495 vs 2795 vs 4700

[MTHall49]

I am looking at getting one of the following:
HX 2495
HX 2795
HX 4700

BIG price differences maybe, but other than that, do any of these models have a bad reputation for overall quality, reliability, or in any other way?

[MTHall49]

Just thought I would update this thread.
Now I need to find out what type of cards.