Need to make a decision fast 5.7/6.1/340

I recently went through this. I ended up going with the 340 with reliability, power, and budget in mind (i planned on "daily"ing it). budget was the first thing destroyed. i ended up 11k into it. in hind sight if i knew then what i know now i would have gone 6.1 and never looked back. reliabilty power and mileage to boot. they really are great motors