And too bad ST will boot you and you'll lose your number for using too much data in one day, according to their arbitrary and unknown limits...
Basically:
ST Pros:
-Only $45
-Can get refill online or at WalMart
-Offers microSIM so you don't have to cut one yourself.
ST Cons:
-Unknown data limit (around 100MB a day, 2GB a month)
-Customer Service is terrible
-If you pass the data limit, you usually get one, maybe two warnings. After that, they kick you off, you may lose your number, and usually the remainder of your service.
-Need some sort of Connection or Network Setup app to setup MMS settings
-No LTE (as far ask I know)
Red Pocket Pros:
-Customer service is better than ST (which isn't saying much because ST is really really really terrible)
-KNOWN limit of 2GB of data, no daily limit
Red Pocket Cons:
-2GB is the max amount of data per month, don't think you're allowed to buy more (like an overage). Once you hit 2GB, data is cut off.
-$60, so $15 more than ST (Though you can find discounted refill cards)
-Also need a Network Setup app for MMS
-Data MAY be slightly throttled. I heard 1.5Mbps, though some people did post speed tests of 3.5Mbps. I guess YMMV, check howard forums for more info. I have not used RP so I can't comment on it personally.
-No LTE
GoPhone Pros:
-Add as much data as you want
-Data can rollover if you add another data package before your old data package expires.
GoPhone Cons:
-Speed is throttled. From what I remember, I had trouble getting past 1.5Mbps. Usually my speed tests were always 900kbps or 1.1Mbps. Don't know if that has changed since then.
-No LTE
-Data is expensive. $5 for 10MB, $15 for 100MB, $25 for 500MB.
-Unfortunately, I think you still need Network Setup app for MMS settings. If I'm wrong on this, someone please correct me.
Also, I have no idea if Red Pocket has a microSIM, or if you can get a microSIM for GoPhone. I have heard of some people getting a microSIM for GoPhone (they wanted to use an iPhone), but you obviously can't mention what phone it's for or else they'll probably say that's not allowed on prepaid.
This is all off the top of my head, so if I've forgotten something, I apologize.