My favorites are:
- Braxis Holdout
Because of the Zerg rushes (I love zerg ) and it requires a smart strategy, or bold teamplay.
- Haunted Mines
Back when there weren't alot of maps, this was my all time favorite. The objective is your main concern in this map. It requires teamplay or a very sneaky tactic when your team rather goes for mercs (this is smart though). Usually I'm the sneaky person getting all the small skulls
- Blackheart's Bay
The objective in this map is very interesting. Alot of people don't do the small camps, just sometimes the merc camps. Even when I'm playing support on this map, you'll find me doing the small camps. Doubloons are very important. In this map I like to go solo (so botlane) and get the objective when I can, or fight over it with my team.