And 0800 numbers are free with GiffGaff...which for me would be a plus point as I use a mobile phone all the time due to hearing difficulties.
The £10 Goodybag would be my choice/suit my needs.
Saying that I am with T Mobile at present,I got a Samsung Omnia7 phone (which was free) and get 300 minutes,300 texts,unlimited internet(fair usage policy) and unlimited calls to any UK (01,02,03) numbers....for £12.32 a month