GPS V - but be careful about memroy
I have a Garmin GPS V and a Garmin eTrex Legend. I really like the GPS V, the eTrex is not all that useful to me.
I do not like the eTrex I have because it is too small to read while driving, it does not have the capability to have maps downloaded. It simply does Lat and Long for everything. It also has less intuitive controls in my opinion.
The GPS V works great for me. The largest complaint I have is that 19MB of memory is right at the level of being not enough depending on your location. I travel a lot for work, so I also use it in the cities just to find places to eat as well as to keep from getting lost. It works great. However when I go to some metoropolitian areas, I run out of memory.
They are both water resistant, they both have cables to connect to laptop and power.
HTH - YMMV