I put dawn Atlas Mk.II it is not a goodCapital, by any means, but it is one powerfull ship when you are suposed to get it, it just need Augumented Drive Field to get to burn 8.
I also put dawn Odyssey, this thing has a combat speed of 70su, which means it can outmacht the speed of half of the ships, in fact the only ships this thing fears are Paragon, which turns as fast as Odyssey turns around it, Radiant, because Remnant teconology, and The Guardian, which is a lone wolf.
I put down Legion and Odyssey - with the Odyssey skating in on the question being "favorite" not "most-used". I like the Odyssey, but I don't consider it to be a very good ship at the moment.
The Legion, though? Burn drive works well enough for not being as sluggish as the Paragon, and - unlike the Onslaught - it's relatively easy to set it up with weaponry/fighters that just work without requiring you to carefully manage flux or awkward firing arcs.
The XIV Legion is overall slightly worse than the regular Legion... but it's a lot better at taking down stations; load it up with Hammer Barrage launchers and expanded missile racks.
Why would XIV Legion be worse than regular legion when it has more OP, more flux, and more armor in addition to 0 flux intensive large mounts in exchange for 2 0 flux Large missiles
Legion(XIV) is a very hard to fit, it can match the carrier power of the Astral, but it needs to be in the front line for it to work, and the ship needs perfect conditions for it's guns, while normal Legion can just snipe using Gauss