Get the single amp. You're not going to notice a difference between the two, and it's going to be much simpler. You may on the meter, but if you're chasing tenths like that then trying out both ways might be the best option.
Single 8k. How many times are u gunna ask this same question. I swear I've seen u make a bunch if threads asking the same **** thing. On here and Caco and everyone tells u the same thing.