I'm on the Tmobile $30 plan and it's working great. Data speeds are pretty good compared to what I got on Boost. My 3G speeds on Boost were abysmal at about 40-50 kbps. Now, on TMobile, I get about 2-3 Mbps throughout the city, not just at my house, plus the monthly cost is cheaper. It's a no brainer for me.
I got my phone for $110 used on Ebay in close to mint condition. No scratches or scuff marks. Highly surprised! Screen is clear. Back and sides look brand new.
Talkatone or GrooveIP (w/Google Voice) means VOIP so my minutes aren't affected.
Samsung Tab 3 (7 in) • Deletrious ROM V1.6 /TOSHIBA Thrive • Pio's Team Baked BlackBean ROM 4.1.2/Samsung Galaxy Note2 • Temasek v37 kitkat (4.4.2)/HTC EVO 4G • Decks Reloaded ROM/EVO Shift• JellyBelly ROM/Samsung Galaxy Note I (i717)•CM11 (4.4.2 kitkat) /Samsung Galaxy S3 •DanKang 4.3.1 ROM