Any good mobile phone shops in Windsor?

Recently I upgraded my mobile phone at the Vodafone shop in

Peascod street. Now I am looking for a new phone with android and that support

skype (which is missing from my current phone) and much much more. Please don't

say iPhone...... can you suggest any good mobile phones that I can buy on payg

and my budget is around £300. Suggest good mobile phone shops in Windsor if you

can....apart from Vodafone shop as I have been there and they have limited

choices for payg.

Also on payg.... which would be the best deal to take that offers good mobile internet? Currently I spend £10 on top up, which I transfer into freedom freebie....but I realised that my data exceeds when I use youtube, Guardian and other apps and I want a mobile internet package that offers more than 250 MB that I am getting. Any help?