I researched alot because I wanted the best and cheapest.
www.buygpsnow.com sells the blue I 737 for around $70.
I have had it about a week.
It is quick, about 25 seconds from turn on to locate.
Its precision has been outstanding, and it is able to be used while inside.
Every other Gps I have ever had can not do it.
I used it the other day in the back of an airplane in my shirtpocket not against the window and precisely tracked for 2 hours. Every other gps has to be against a window or outside
Last for 25 hours on a single charge.
I researched for weeks, this I am convinced is the best deal going.