From my own experience it,s rather like driving a 15 year old car thats seen better days then going out and buying a brand new Audi. I had 2010 for quite a while until I got a new computer then I upgraded to TS12 tp play the East Coast Main Line Route. Then I made the fatal mistake of reading a post in the Multiplayer Forums about some Route called UMR SUMMER. I was not interested in multiplayer but overcome by curosity I thought I,d give it a try. But it got worse. They use Teamspeak 3 so I had to install it. That was my fatal mistake. I became totally hooked on it. Partly because of the session, partly because I could interact with other players and partly because I got to know a some really nice and helpful people, including Danny. It,s got so Bad I,m now hosting my own session. If you take the plunge and want to try multiplayer I think the Best sessions are mine (of course) Port Ogden TS12 MP V1, Lewis,s UMR SUMMER 2013, and Jib 228,s Montana Rail Link MP V2 Danny is working on a session using the same basic route as mine which should be available soon. UMR SUMMER is the only truly 24/7 session at the moment But I keep mine going for several days at a time and Jib228 runs a nice, more formal session. `