I always like to sit in the front row of inverts, even though many of you think the back row is better because of the Gs. As far as flyers, I like to go for the front again just because I don't like the view of the bottom of people's feet. I also like the front seats on MF and Maverick for the view, since the back row doesn't offer better air-time or Gs.
The one coaster that the front seat makes a difference is Cornball Express at Indiana Beach. Even though I like to ride in the back seats of most woodies, the front seats on Cornballer gives you an extra air-time pop that you don't get in the back due to trims. Plus it's just more fun to almost fly out of the car when you're sitting in the front.