The main difference between geo+ and Geo 2 was the 2nd Gen springy propshaft that increased efficiency somewhat.
Differences between ego 10 and 11 : The Ego 11 has an adjustable 'noid. I don't think the Ego 10 has the sl3 reg either. Both have a Zick 2.
Ego 11 was designed to be more ergonomic aswell.
i'll apologise if i'm wrong but i'm sure the SL3 was on the ego 10. but yeah the solenoid was the big change but the stance of the gun was changed and i believe the screen was a bit bigger too? either way i've used the ego 10 and they are nice guns but people have been really happy with their 11's since they came out.
Okay thanks, are they both worth the extra money?
Ego 10 and 11 its not a massive difference, and depending on your budget either will suffice. the solenoid is nice but in general it seem like most people will never bother touching them again after they have been set, and the same with the SFR on the geo3.
But if your choice is between a geo and geo2 there is no question that the geo2 is far superior. the geo was the first of its kind from planet eclipse and it wasn't all that great a marker but they turned it around with the geo 2.