When I was introduced to Warhammer as a child I didn't know what race I wanted most... So I ended up getting a few samples of different armies, like Necron, Tyranid, Dark Eldar, Space Marines, and at a point, some LOTR pieces... Eventually though I concentrated on Space Marines and bought a decent army size with a Whirlwind, Land Raider, Predator, Razorback, Land Speeder, a command squad, a couple squads of infantry, an assault squad, and the starter set they used to have a while back named something like Battle for Makgrag, or along those lines. I used my own custom paint scheme that I'm still very fond of, and if I pick it up again in the future I will continue to use. I also love Dawn of War, which is probably my favorite RTS ever.