I dislike the Cruiser class mostly. By the time the Second Great War, the cruisers we're fairly useless against Shivan forces. With usually one, weak Anti-Cap Beam Weapon, no flak guns, a missle launcher, around 2 AF and laser turrets. Plus you can destroy them easily, fighters can beat the hell out of it, Destroyers just incinerate it. I'd understand if it was used in backwater areas for purposes, but for the main systems, it has no use against the new weapons of the current time.
I do however like the Aeolus class cruiser, with flak, two anti-cap beam weapons, and laser turrets, it is the most powerful of the Terran and Vasudan cruisers. I dont know why they stopped producing them, they ruled the Fenris and Leviathian.