I was looking for a new Sim Only offer and have found that virgin offers some of the best combinations.
Best Deals In My Opinions are:
£10 - 200 mins Unlimited texts
£15 - 500 mins Unlimited Texts (was 300 Mins)
£18 - 700 mins Unlimited Texts (was 500 Mins)
Has been Extended till 31/03/2010 !
Hope This Helps!