Heavy Centaur is by far the prettiest and I used one as my flag ship for abit today... I also picked up a Skiron which had an extra slot for 200 MJ shields, with an 8 bay front battery.. In battle is seemed to out do the Heavy Centaur. However I think its ugly as sin. Right now I'm sitting nice and cozy in my Shrike M7.. and its lovely hangar of eight, but we were talking about M6's..
