I like this car. If the 5 speed manual is at least as ok as the Hyundai Elantra's 6 speed I'd be fine with it, which is no Ford Focus feel wise but it shifts into the gear you want it to go in if you're not too eager. If it's closer to the Corolla's 5 speed, I would stay away from the Impreza. I hated my 08 Corolla's shifter, it would grind even if I was careful with it. I hope it's not the latter case considering Toyota owns a small share of Subaru.
I heard the 6 speed manual mated to the 2.5 in the Mazda 3 isn't that great either, TWM has produced a full replacement shifter to dramatically improve the feel. The 6 speed Skyactiv manual is supposedly better.
I like this car otherwise. Unlike the Focus, the Impreza is quite comfortable in the back seat when I'm seated behind myself, and I'm 6'-1".