Personally I use fighters for my warp defense, as the limit of units in space doesn't work...I forgot to change it to 2000, so it defaults to 100? (200?) and yet I have approx 1600 units in space, with close to another 1000 in storage.
I use small fighers, with 2 lv2 uranium cannons on them...these Last for a majority of the game, doesn't matter if the AI has PD or not when he comes through a warp point, because it usually doesn't Last longer then a turn, and my fighers don't move
