The New Hampshire is much better than Alaska, if you want to make missions with your capital ship, against NPC's caps. (MOAR MISSIONS FOR CAPS!)
Firstly, because there are no asteroids. The second point is loot. In Alaska, you will be looting space ship crew, Order pilots, H-fuel and stuff like this, but not credit cards, or high price cap commander. In New Hampshire, you may also make missions against LR, their ships dropping cash also. May be one of disadvantages....place, where you can sell captured capital commanders (Missions against Rheinland Military) located in Ontario system. Not realy clouse way. So you may need another char, like loot storage. When its full, you may fly and sell it.
So New Hampshire will be the place where you need to check.