I currently have a HTC Desire S on a £15 contract with Virgin which I love but is starting to have a few issues so I think it's time to retire it. My contract has just finished & now I want a Windows 8 phone. My options from Virgin are the Lumia 520/625/720. I'm assuming I'd get the best deal staying with Virgin but would be happy to look elsewhere, especially given the limited selection available from Virgin.
I looked at the Lumias yesterday & found the corners didn't feel overly comfortable in my little hands. Are there cases available for them that might make it more comfortable to hold?
I currently get 200 mins, 3000 texts & 1GB of mobile internet. I use all the minutes, quite a bit of the internet & less than 10% of the texts. I'd be happy with a similar contract, although would prefer a few more minutes.
My main requirement is for a decent camera. I have 2 young DC & relatives in far flung places who love to see photos!
I'm pondering buying a sim-free phone & switching to a sim-only contract. Would that work out cheaper long-term? Or PAYG? We're on a tight budget as it is so can't afford a much more expensive contract than I currently have. We do have a bit in savings though which could cover the initial outlay of a mid-range phone.
I forget to get myself lunch on a regular basis at the moment - I have no headspace for making decisions like this! 
Any advice would be gratefully received!