As for favourite SAM systems for SAMSIM, I'd have to go for the Antey 2500/S-300VM, now thats a serious system.

Yeah, it was so serious, that eventually nobody could got it outside of the Soviet Union...
yep

Hpasp
Free SAM Simulator, "Realistic to the Switch"
(U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.)
http://sites.google.com/site/samsimulator1972/home

Book from the author - Soviet Nuclear Weapons in Hungary 1961-1991
https://sites.google.com/view/nuclear-weapons-in-hungary/
thumbsup