Dinan S2 4.6is vs 4.8is

[qiksvr1]

I am looking at pre-owned, so I have seen that mostly the 4.6is are 10-20k less. I know there have been a couple of post about this already, but they didnt specify a whole lot. The Dinan website says the s2 package for the 4.6 raises the hp to 369 and the torque to 382. So I am just wondering why would the 4.6is dinan s2 and the 4.8is be a wash in straight line accerlation . The 4.8is has 14 less horsepower, 13 less feet of torque, and weighs approximately 190 more pounds. Compared to the 4.6is Dinan s2. Maybe I read some inaccurate post, but why would these to x5s be equal as far as acceleration. So what would you guys rather have, for $10,000 less have a fully loaded 4.6is dinan s2, or a fully loaded 4.8is for $10,000 more. I know that the 4.8is are just awsome, with the self leveling and the new pan. sun roof. Oh another question is how do the 4.8 and 4.6 compare to the ford f150 lightning??