You could always just go for the experience. I did some flying in a king air and found it thoroughly worthwhile. Im not type rated so cant log any of the hours but it certainly got me into the environment - all airways stuff, busy RT, busy airports etc. All good 'real world' stuff, a far cry from the comforts of the training courses. Try hunting around your local airfields and have a chat with some of the local owners. Some are only too glad to have someone else suitably qualified along for the ride.