Well as my sig says I have both the GM8 and the G11 (and I've nearly bought an EQ6 half a dozen times. (stay away from h0ughy, what ever he has is contagious!!!!))
The GM8 is a great little travel mount and I like it a great deal when combining the ED80 and a small guidescope. It does have much greater PE then the G11, but I have found np in autoguiding it out at the FL I am imaging at. It would be a different story for longer FL but then it probably wouldn't carry the weight either.
The G11 is a great alround mount. Yes it can be portable, but I prefer the GM8. The G11 is no AP mount, nor is is a Paramount ME, but it doesn't pretend to be. It is no frills but with quality
. And boy it looks sexy. Just ask Dennis, he spent 10min trying to chat it up one night at duckadang. He tells everyone he though he was talking to me, but I know I dont look that good.
The PE on the G11 is not fantastic (10 - 15 arcsec peak to peak top to bottom ) but it will guide out with np. They can be a bit fiddley getting the gears meshed properly at times, but once you master your fear of taking the worm covers off you will be fine. Get yourself a set of feeler guages. Out of the box they are usually fine, but some of us like to tweek.
The only EQ6 I have had exposure to is h0ughy's and once we got that working (Told him he needed the shoestring adapter for it, but would he listen to his guru.
) it worked like a charm. Not a problem with the Intes on it with the ED80 for a guidescope.
If you are limited by your budget, then definately go the EQ6 if you want to upgrade in weight in the future. If you can spare the dollars then go for the G11 without Gemini. I use the AN on mine occassionally, but normally I star hop without a problem and you can autoguide directly through the handpaddle port of the G11's digital drive. If you want to use your handpaddle at the same time just get a double adapter from Shoestring astronomy, works a treat.
Have fun!