Yeah, with Dilgar, it's usually a good idea to either go "fast" or "slow" but not mix them together too much. This means ships like the Ochlavita, Targrath, Omelos and Tikrit go well together. Also the Rohric, Kahtrik and Wahant go well together.
The Garasoch Carrier and all of the Patrol PL and War PL ships would work with either fleet.