We've got: HMG, Chain Colt, and Panzerfaust for 55pts AP Spitfire, Light Flamethrower, and Panserfaust for 56pts. Obviously AP is a useful tool to have in N4, but the increased range of the HMG is definitely appealing. Which one do you use most often?
It is entirely situational to be honest, personally, I would go for AP Spitfire since my Anaconda would inevitably get bogged down to short range encounters and not a long range fire support role.
I usually default to the HMG. If i can bully and outrange infantry models, i will. I try not to run the Anaconda up against other TAGs. Once good hit from an explosive round from a Multi-HMG, and it's lights out. The flame thrower is nice to have, but i just prefer not to get that close. Though...I am hoping to one day use that shiny new AP CCW just for giggles.
I tried the AP Spitfire profile once. The reason I used the AP Spitfire was because I was playing a 16" deployment