I'm a big fan of XCom, Syndicate and Masters of Orion. I've tried all the Android DosBox emulators, and they were mostly too slow, unplayable, and left a lot to be desired. The other day, I discovered DosBox Turbo
I've been able to play my XCom at full speed now, and on my ASUS Transformer, its the only DosBox that fully supports my trackpad and even External Mice. I even ran Turbo C++ on DosBox Turbo for fun.