Need your thoughts on cheap phone plans.Metro by tmobile $100 for 4 lines

Hi guys,

It looks like this hasn't been discussed in a while and I want your experiences using a discount cell carrier.

Since TMobile purchased metro I figured service would be spot on and decided to take the plunge on four lines. Since switching over I'm constantly finding dead spots where I can't get any data (I live and work in a major metro area). I regularly get less than 1mbps down and it is starting to piss me off royally. Particularly since they claim unlimited high speed data.

Anybody have these issues? Any thoughts on cricket or boost or another discount carrier?