Rail Simulator

I was thinking of getting this, is it good? Worth the buy? Or should I wait for MSTS 2. Also, how well will it run on my specs: Dual core 2.53Ghz, 4gb of ram and GeForce 7050.
Flight Simulator and other chat
https://forums.simviation.com/phpBB3/
https://forums.simviation.com/phpBB3/viewtopic.php?f=44&t=155977
I've got the demo... looks quite good. One question, is it all steam and old fashioned trains, or are there any new ones?