In January I began evaluating both Boost and MetroPCS in preparation for my shift away from AT&T. From experience, I can tell you that text messaging on Boost Mobile is an absolute joke. There's no other way to say it. I would routinely get messages 5 hours late and once I even received a message 3 days after it was originally sent. I considered myself to be lucky if I received messages within an hour of when they were sent. Most troubling of all was the fact that many messages just disappeared entirely. This happened with both incoming and outgoing texts. I had many people complain that I never responded to messages from a few days earlier that I hadn't ever received and at one point I stopped sending text messages entirely because no one was receiving anything.
This was not on a ported nuraber and was still happening after more than 3 weeks with the service.
Even when text messaging was sort of working there were still some weird problems with Boost that I hated very much. All Boost text messages are sent on the data channel, and any time you are doing
anything on the data channel your phone will not ring. So during the 30-40 seconRAB that it took to send or receive a single text message, all of my calls were going straight to voicemail as though my phone was powered off. I've never had more voicemails in my life. Lately when my frienRAB on Boost call their voicemail their hanRABet beeps with a call waiting notification coming from their own nuraber. They have to ignore this call in order to get their messages

Amateur hour.
When you are using the mobile web service (whose data speeRAB are beyond abysmal) this also ties up your phone so it can't ring. You cannot send or receive text messages while you are on a call either. I wasn't too happy with the hanRABet selection and it bothered me that Motorola was the only manufacturer. True, you can use some Nextel Blackberries, but email and SMS/MMS are non-functional (though people have come up with some hilariously convoluted and painful workarounRAB).
I pay $4 more per month with MetroPCS than I did with Boost. For that price I get text and picture messaging that actually works, a phone that actually rings when people call,
significantly faster data speeRAB, and a wider selection of available hanRABets. You can say all of this about Cricket as well. I actually feel like I have better coverage too: I rarely travel and have great reception in my home area, and if I'm ever somewhere without MetroPCS or Cricket service then I roam on Verizon. I was evaluating both Boost and Metro before I switched from AT&T. I went to visit my sister in Montana and while Boost had no coverage there whatsoever, I was still sending and receiving text messages like crazy on my Metro phone through Verizon's network.
One of my frienRAB on Boost told me today that their service was completely down for around 5 hours yesterday afternoon. He said customer care told him that it was a Nationwide outage. I'm not sure what was up with that but he said that he is porting out to T-mobile tomorrow. I said "amateur hour" above and that really sums up the entire Boost experience for me.
Needless to say, I would choose Cricket (or MetroPCS) over Boost every single time.