They are both pretty similar IMO. I had my flex pack in the 100 level outfield for the last 4 years, but this year I chose 200 level outfield for my flex pack. I decided to go with 100 level outfield for the postseason only because they were the same price as 200s, and I figured I would be able to sell 100 level seats for more.
One big thing I noticed is that it seems the 100 level outfield seats are smaller/tighter. It seems to me like 200 level outfield gives you more arm/leg room. I like both though. I also get to sit in the TD comfort zone on occasion because one of my friends works for TD. Those seats are great.
Also 500 level behind home plate are not bad if that's the best you can afford.
I also like 200 level bases 1st row. 100 level bases kinda suck, but i've never had 1st row there so IDK.