Sprint has a nice family plan, if you have the right plan, cell to cell minutes dont count towards your minutes we have something like 2000 minutes I pretty sure we use less than 200 of them since cell to cell is free. The wife and I have 2000 min, unlimited data, text and sprint tv, sprint navigation for $130 a month before discount, verizon was quite a bit more and limits their data to 5 meg (that matter to me I have data heavy months from time to time.) Bang for the buck IMHO Sprint has best and cheapist plans for heavy users. I cant say for sure for phone and text only.
I’ve also for the most part had ok customer service, though I had to spend a little time on the phone discussing problems. Phone service for me has always been excelent.
Make sure you check with the companies to see if the offer any discounts to you based on where you work.