Hmm, I don't think polycount matters at all really. Want to learn more about lowpoly modeling.. go lowpoly.. want to learn more about highpoly modeling.. go highpoly... That's about it.
And increasing the speed of which you model, low or highpoly, it's still a good thing.
Anyhow, my vote goes to HollowIchigoBanki, neat model
Cheers!