Really any chip vendor that is mentioned on the forums will do a good job. I was going to go with Geno but did not get a call back for over a week. Thus I went with Torrie at FPN.
What is the venom 400?
Well does the LMS one hurt your gas mileage? It says it increases power and mpg but that cant be happening.
SCT all the way from a well recomended shop. I would find a local shop in your area to do a chip & dyno tune for you.