You best bet is to go to the field and ask people if you can shoot theirs. Try some of the older model guns too, like 09 egos and geo+s will leave you some spare cash for loaders or tanks.
Chaos Theory #32
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Fightin' flames for the Four-Nine since '08 My WTB Thread Old Feedback +9/-0
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Didnt like my quest, thought my dm6 was smoother and much quieter. Protege/vice still the best value in the used market. Havent owned a g6r/ego11 yet so cant comment on those.
Course ive only owned a couple dozen or so diff types of markers since 97. I would follow the above advise and try shooting some of these. Might be surprised how little difference there is anymore.