wifi is all about the device you are testing with - if you got 60 before and your package was higher than 60 which it must have been then whatever you upgrade to will have no effect as its the device thats controlling the speed
certainly some devices will do much better than what you are getting - i am no expert on whats better but modern smartphones and tablets should do much better than 60 as should wifi on a laptop
Just as an example, my Macbook Air and iPhone7 both get 220mbps on my Vivid200 wifi connection - but only when I put them onto the 5GHz network (or on ethernet cable). Sat in the same spot if I then flick them over to the 2.4GHz network, they max out at 70-80mbps - it's just the limitations of the wifi technology!
-------------------- Services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.