Which is your favorite type of character build in MEA?

As I continue playing this game, I'm slowly working my way through every skill offered. The potential combinations are myriad. I certainly have my favorites, or rather "Favorites"; but I'm curious to know how others are playing. This meant I had to have a poll. I've given everyone three picks, which may be too many. Too many picks, and the waters stay muddy. Too few, and maybe it's impossible to decide.

At any rate, I'll start by listing my Favorites, as well as addressing my least favorite type of character.

1) Biotic : I always come back to this, at some point. My Adept (Pull/Singularity/Throw) seems to be my default Ryder. I love biotics, and it's a blast to play.

2) Tech: I really enjoy playing a fully tech Ryder, also. Sentinel (Incinerate/ X /Energy Drain), where X is Assault Turret or Remnant VI, is a favorite. Those bots are incredible, tying up enemies and priming combos. Meanwhile, the Sentinel is an invincible master of detonation damage.

3) Combat+Tech: This is my Architect-killer, and maybe the basis for a "gun master" playthrough, in the future. Explorer (Turbocharge/Tactical Cloak/Invasion) melts Architects on Insanity with the X-5 Ghost. Anything that takes advantage of that damage and/or RoF boost should do likewise. Now that we finally have a good, full-auto assault rifle, I'm considering a playthrough with a version of this as my primary Favorite. I've enjoyed messing around with Explorer (Backlash/Tactical Cloak/Turbocharge), a bit.

Least Favorite: I can't bring myself to build a purely "Combat" character. I love constant combo-detonations. That's a big part of it. Also, most Combat skills look underwhelming. Mostly, though, I am put off by the Energy Cell costs. I'm a Vintage Heat Sink lover in a game with tons of ammo. You can imagine my hesitation to choose skill-powers that use exhaustible resources. What am I missing? Tell me why I'm missing out, if you're a Combat skills-monkey.