Based on getting the best between Price, Performance and Features (Static IP) I would say Sky Pro!
I only really recommend a few providers as it is based on contracts, they are BT, Sky, Zen...
There may be others but prices start shooting up and also some other reasons, like Pulse8 as well as being expensive monthly seem to have an odd way of signing people whether it be migration or new line (ruling out any previous migrations issues) they seem to charge for ADSL circuit to be installed and activated (which is costly anyway as its wholesale price not subsidised) and then charge another fee to upgrade that circuit to FTTC!
I'm currently in a wee pickle myself as I've been tasked by my grandfather in-law to get his monthly outgoings for telecoms reduced to bare minimum due to him recently being forced into retirement, he was pretty into a deal he had seen from TalkTalk but after advising him on a few requirements and prices don't include Line Rental and some other bits, I've now got the job of sorting the best deal without o much fuss as it will be remote now that I live in another city.
Currently he has Sky's BB Unlimited with Anytime Calls, Sky are increasing his Line Rental in December by £1 to £17.40 but then following that in January his phone tariff is going up from £5 to £8!!!
However after looking around, I feel Sky are going to be the best deal and also be the easiest to manage from a distance.
So Monday I will be in negotiations with them over getting a new deal for new contract.
Plusnet is a viable option price wise but is not worth the hassle with the network issues and the fact that currently I see too many complaints about migrations/activations going wrong and then the inability to contact there support.