I'm looking for ways to reduce my phone bill, and ideally I would get rid of my unlimited text plan. Yet, I have heard that SMS messages sent through GV aren't as speedy or reliable as those sent through your carrier. I've read that it often takes up to 5 minutes to receive a text message after one is sent to you. If I'm in the middle of a "texting conversation" I don't want to have to wait 5 minutes to receive a reply to one of my texts.. Is this true? Or does Google Voice SMS work like a charm and I should just drop my $20 a month text plan?