Which would you like to have and why.

It would depend on whether or not the I-4 was an auto or stick.
I would NEVER buy an I-4 auto, they are like a whole second slower in the 1/4 than an I-4 stick.
I would also never buy the non-vtec DX car, auto or stick.
It would be nice to have a V-6, but they only come in auto so its kind of a trade off. Personally I like to shift my own gears, so I would prefer the I-4 even though the V-6 is a few ticks faster. :)