Hi Lee,
When things are not so great the RMS is around 0.7-0.8" and it causes noticable star elongation at 1.33"/px. Would like to have longer exposures with autoguider to reduce effects of seeing, but then moment to moment RA tracking errors of my mount can be too significant and need more frequent correcions. So I found 1.5 sec corrections to be a fine spot with my mount most of the time.
Yes, you are right, there is an attraction towards a better mount, but I am not in a rush
