I use Ryanair all the time for my flights to Spain. For me I have no complaints. The charges do pee me off, but they still work out cheaper than others. Not much room, but for 2 hours and at almost 6ft I can live with that. Only travel with hand luggage (A Lowepro 100 thingy), never had it weighed or dimensions checked.
My only gripe is that I always have someone who smells sitting next to me - Always without fail!!