Got a Samsung Omnia the other month after I'd had my N95 for over a year and I'm really liking it... its really easy to use, even if you've got big fingers, cause you can change the text keyboard to a 'normal' keypad style. It runs a Windows Style operating system and has got a lot of features that I've not even tried yet, but basic things like screen, camera, texting, phonebook, web browsing, calling etc is all fine so far.
I had a brief look around and like the T-Mobile advert on tv says, I couldn't find more minutes for £30 a month. I also get unlimited texts and for a fiver a month I get unlimited web browsing too.
Cheers,
Grant