Advice on converter selection

I have same gear back, 14" wheels and a hot rodded 273 commando with a solid 495 lift comp cams. I've been through 3 different converters. The stock one, a 10" 4000 stall tci super streetfighter and now I try a 2500 stall B&M. I like to change things around so Im not afraid to get my hands dirty and try "weird" combos out. With the 4000 stall the commando was insane for lack of a better word. But it was of course horrible on the street. But just for racing and for fun it really let that 273 hit right in to the power band. I'm pretty satisifed with the 2500 stall b&m now also. It's a little of both. I guess the right way to go is have one made, but since I tend to change things around often its hard to have a perfect one made anyhow. Hope I make sense. Good Luck!