W'n'W Std = £7.50/month - No HSDPA (except on some older contracts) 1Gb FUP no tethering
W'n'W Plus = £12.50/ Month - HSDPA - speeds vary depending on congestion - Athena limited to 1,8Mb max 3Gb FUP No VOIP tethering allowed
W'n'W Max = £25? / Month As plus but with VOIP
Unless someone wants to correct me that's how I believe it stands (the old W'n'W Pro for £10/month was only available for a few months)
T do not limit speeds but the 1.8/3.6/7.2 etc are maximums which are shared so you are unlikely to ever get 'full' speed.
He who asks a question looks stupid for 5 minutes. He who doesn't ask a question remains stupid forever.
Nexus 4 coming from iPhones