Got to go with Battle Islands.... Skyrim is a good map but BI i find is really strategic, ebbs and flows in strengths are frequent. In other words fun!Castles i'm afraid would be my last choice. Theres only really one strategy and as someone has already said it often comes down to who gets first move at the center. Make those shortcuts worth 3 instead of -1 and it might become more open. The other 2 maps i've not played but look pretty good.
Map of the week discussion: Week 27: 7/15/2015 21:44:17
I voted for Battle Islands III Another option for me would be Europe Four Castles: It's a creative and tactical map, while 4 castles has no real names, symmetrical simple maps consisting of block territories (for me)
Check next week the game tab for my random game version of the winning map!
Edited 7/17/2015 07:36:15
Map of the week discussion: Week 27: 7/16/2015 18:45:32