You can compare the VP2, WMR968, and 2315 on my site. I have one of each on the same pole.
Of course, the update rates are all different in real time, so I have them on a 5-minute update rate. My old computer won't handle rapidfire without locking up.
All stations have their pluses and minuses: update rates, sensor placement options, solar vs. battery, price, etc.
You should get the best station you can afford, IMO.
Good luck!