Year’s back I spent the summer and fall running all over the West. When I returned home and caught my breath I started researching gps units on the net. It was not long and I heard my wife rummaging in a back closet. In a few minutes she handed me a new in box gps.
As she handed it to me she said she did not know what unit I want, and I could return it if wanted. I really appreciated her insight into my wants, and that she was okay with me exchanging the gps. I did exchange it for a unit that cost more, and it was a good investment. I am a strong believer that in most cases a more expensive gps is a good investment. But the technology is rapidly changing and your new unit will be obsolete in a short time.
From looking at the information the 200w is a good introductory unit.
A key is that all the units you are looking at have the high sensitivity receiver. My son has an early Tom-Tom that works great in most areas, but in cement canyon it fails to receive. The grandson barrowed it for a trip to San Francisco, and it was useless. Tom-Tom now has some units with high sensitivity receiver.
It appears you have done a lot of research, but if you have not used it try the Gamin page, which allows you to compare their units.
https://buy.garmin.com/shop/shop.do?cID=134I can understand looking for a deal, I am always looking for a deal. I also suggest that you check the Garmin rebate page every once and while. I have saved some bucks between a good deal and a Garmin rebate. I suspect we will see more rebates in the spring.
http://www8.garmin.com/whatsNew/currentpromotions/