Benny I'm not sure if it's still the case mate but I know originally when these offers started the phones that had really good free gifts with them were not the latest models, or not the most popular handsets, ones that the company had been stuck with a shed load of.
Whether or not this is still the same I dont know, and at the end of the day you might not be arsed about what phone you get as long as it's decent, but personally I'd rather have the phone I want on a tarrif that's right for me than have a phone I wasn't arsed about on a tarrif that didn't suit my needs just coz it had a free ps3 or 360 with it
