I have Infinity 2 uncapped usage and, although expensive with any time calls included in my package, I must say it's been 100% reliable, stable and with constant speeds all day (and night). 40 Mbps down and 12 up. About 200 Metres from the cabinet.
Looks like you get a nice 'freebie' if you sign-up.
Upgrade when it's available to you!
Allergy Advice: This post may contain traces of Meerkats.