If a regiment claims to be the best, they Arent. Professional modesty will take you a long way.
If I were to recommend some to you, I would urge you to join a Regiment with several detachments, allowing you to switch, should Artillery get tiresome. For this end, you have the 6e, Who fields, as far as I know, Infantry, artillery and Cavalry, and possibly Jaegers. Same with my regiment, The Freikorps. Should you prefer the brittish Faction, the 33rd fields both Artillery, Skirmishers, Infantry and Cavarly, as far as I know.