Next up are a pair of Vengeance Class Grand Cruisers, a steady old workhorse of the Imperial fleet that draws on both Imperial and Chaos fleet aesthetics to create what I think is a really nice model. I particularly like the broad, flat, heavy prow and the two bridges.
Unfortunately the Grand Cruiser model is now rather rare, being limited to eBay sellers, which is disappointing as it forms quite a key selling point of the Bastion Fleet list and has alot of variants that really add to the number of choices available to an Imperial / Chaos admiral. Still there are a variety of ways around that, including magnetising the ships you have (these are not, but could easily be made so) or conversions such as this rather good one on the Specialist Arms forum (also rather good for BFG and Warmaster, but covering all of the Specialist Games).
I also rather like the Vengeance in game terms as it provides long range fire power to the Imperial fleet (FP10 WB @ 60cm and 2 lances @ 45cm per side) while being rather sturdy. Although lacking the 6+ armoured prow of most Imperial cruisers, I feel its range and extra shield makes up for this quite well. Plus when your guns and Left/Right, you are likely to be abeam anyway.