Tayhot,
If the E-Tip shoots as well as the TTSX, I would scratch the the TTSX. That's a no brainer. The E-Tip has a better BC and is a tougher bullet.
Of the 3 remaining, I would go with the 200 AB or 180 E-Tip because I like a more controlled expansion bullet, but that's just me. Between the E-Tip and the 200 AB I would pick the one that gets farthest down range with 1800 fps based on their MV and BC. If they both went close to the same distance, I would pick the bigger 200 gr bullet because it will deliver more thump down range.
If you like Bergers, I would try the 210 in the RUM, if you haven't already. It will pobably give you a little more range than the others.
Cheers,
Mark