The last anime that I have completed is the Armored Trooper Votoms series and OVAs. God I have no idea why I haven't seen them until now. They have good characters, and a good story, and its also very gritty and dark. I highly recommend you see that series! I also saw a spin-off called Armor Hunter Mellowlink. Mellowlink doesn't require that you watch the other series. You can just go into it completely blind and enjoy it.