Right so there are two groups which I am looking at:
Group one
Worked for this summer
Love the research
8th year prof, all grads have gotten either professorships, decent jobs or high powered postdocs, he just got full professorship
~20 people (grads+post docs)
Group dynamic is not so good. I'm an American and the language of the lab is basically Chinese.
Group two
Haven't worked for
I like the research, I could do it, but I don't like it as much.
6th year prof, only graduated a few students but so far they've all done decently enough for themselves.
~12 people
Even though the professor is Chinese as well as about 5 of the students the group language is English.
both groups churn out papers and are pretty hardcore with respect to work hours (which I can handle)
Dunno after typing this out (I had a bit more but deleted it) it's really should I do research I like less to be in a group with a better dynamic? Any advice? (I have to chose by the end of the month and I can't do a rotation in group 2)