Sat 1-B

If you could find one, the best Saturn !B is the old Estes flying model in 1/100 scale. Easy to paint as it is broken down for that. Another great flying model is from Apogee in large 1/70 scale,  kind of expensive, but highly detailed and accurate. Don't forget the 1/200 scale one in the AMT kit. In 1/144 scale, the Real Space kit is much better than the Airfix.   

Airfix made a 1B in 1/144 back in the early 70's. From what I understand, it was reissued some time in the 90's. It will be difficult to find, but seems to pop up on EvilBay every now and then.

Realspace Models sells a resin version for about 100 dollars, it's 1/144 scale. I remember revell built one, but I'm not sure what scale it was in. Try e-bay for that one. Good luck . Steve

realspacemodels.com