Lately I've been playing a lot of Dangerous Waters (As fun as the Atlantic is, playing hunter-killer with another submarine is equally thrilling), and sometimes I have to push myself to play SH3. When I can sit long still long enough for the game to load, though, I'm engrossed. Also helps that I'm commanding a Type XXI.
Also, up until several months ago, I would've also divided my time with Il-2, but since my only good joystick broke I haven't had much interest. (Consequently, several other games haven't been touched in a while due the aforementioned joystick problems)