All I've gotten so far are species changes. Literally, like 5 in a row. I thought I got a gender change once before from the V1 zapper, but I could be wrong...

yeah, i've gotten tons.

i think the only difference is V2 gives experiments.

v1 can do everything else except give out Experiment pets.

The V1 zapper have changed Seasons into a Experiment . And I get lots of genderswaps from the V1 zapper, it drives me nuts.