Best thing to do (One to Max?)

I currently have 6 lines (2 paid, 4 free, one paid has Kickback and gets the discount every month, and one home internet line from the $25 promo (I'm unclear if that means I have 6 lines or 7 as far as something like the 9+ line Max switchover)). With Netflix Premium and a hardware installment plan, I currently pay $127.29 per month (13.54 in equipment for about 7 more months and 9.75 towards Netflix), which means that once the equipment falls off, my bill will be around $113.75.

Would there be any benefit to me moving to Max? I like the idea of the higher hotspot allowance and such, and while my bill is not bad, if it went lower I certainly wouldn't complain.

The Calculator on T-Mo's site doesn't make it look like it would benefit me cost wise, and I'm not overly knowledgeable on how to maximize savings (other than the big savings move of hitting 9+ Max lines, but I know that Kickback falls off then)

Can anyone who has more knowledge on this help?