We get quite a few people coming on here (it seems) to tell us that our vortec motors are junk, and LS's are the best thing ever. You will notice this too, once you have actually been a member for a couple of months. Typically they start their swap, realize that they actually have to do some work, then give up and sell us all of their parts for pennies on the dollar. We don't care, we like good deals...
I have now owned 10+ LS powered trucks, and prefer the old vortec. I will own more LS powered trucks, as I think that that motor is the next best option after an older vortec.
I am not a purist - I modify everything to make it fit my needs better.
As far as you and your girlfriend trying to scare me away - Back when forums were a big deal I was known as the unibomber. There was one guy that really pissed me off back in 2007, and he still can't get a loan today... Bring it.