I'd get the TEC 160FL. It's a world class scope, not a lot of them around.
I had a C11 on a G11, then bought an Astro-Physics 155 f7 EDFS. My C11 was a good one for the time, a Company 7 scope, purchased a little before enhanced coatings became available for the C11. I compared them for a couple of years, had an emotional attachment to the C11, but there was NEVER a time when the C11 showed me a view as good as the 155. Part of that is certainly cool down issues, the SCT never kept up with changing temps, no matter how long I was out. It wasn't significantly brighter, either (light throughput was a little over 60% taking into account loss at each surface, absorbed by the corrector, and blocked by the central obstruction), would be a little better with today's coatings. I love(d) the sharp views through the 155, never saw anything with that crisp look through the C11.
My G11 was the stepper motor version, predated their servo motors, and it set up a resonance with my 155 and I could see the continuous vibrations through the eyepiece. And the slightest of wind would cause movement, the moment arm was greater than that of the compact C11. I upgraded to an AP 900GTO and it was the best move I made. Someone posted a photo of a G11 and a 900GTO, there is a massive difference you can see, makes the G11 look spindly in comparison. Used 900's are a great bargain right now. And it was easier for me to set up than the G11, the mount easily separates into two parts. I'm 67 and have debilitating back and neck problems, and the 900 is an easy setup for me. The 155 is lightweight as well, no problems handling it, mounting it in the dark.
The newer version of the G11 should be more stable, but I'd still go for a used 900GTO instead, a bigger, better mount.
Jeff B posted a photo of the two mounts along with the 1100 and the Titan in this thread on CN, a picture is worth a thousand words: