i went from the OpV, to the slider, to the 3vo V. the change is leagues above any other phone. the network issues dont seem too bad for me (in the DFW texas area) at work. i get way better signal at my desk than on my couch at the house.
what happens is you signal will just drop. randomly. i will be at good 3g whilst tweeting or browsing or whatever. but my phone down, pick it back up, then ill be at 1x or no signal at all. the no sig only really happend once. it gets a little annoying, far from a deal breaker.
as far as the 25 a month plan goes. i kept my slider on that plan, signed up for a new plan at 35, and gave my previous 2nd line (metro pcs samsung admire) to my dad. two phones for less than the price of ONE on any of the bigg four? sign me up.