Wow, MKIII guys trust Level 10? The MKIV crowd ran away from those clowns somewhere around the time that SP and Powerhouse sued them.
If your venue is street car-type drag racing, and the auto you're talking about is a GM 400, powerglide, or 200R4, then sure, autos are great (real NHRA domestic pro classes don't use autos, btw). Any other venue and I'd rather skip the power loss, weight, cooling issues and frailty of an auto.