Advice Needed - Consulting/VC vs. BB PWM internship

I am asking this in regard to preparing for Jr. Summer IB internships - preferably in research.

I am a rising junior and have been offered two summer internships so far: one at a bulge-bracket firm doing PWM (the kind where FAs earn commission and other finance professionals may derisively refer to them as "brokers"), and the other is at a start-up consulting/VC firm.

I already have a PWM internship with another BB, and frankly, the suit I was wearing was the most impressive part of the job.

I don't know much about what I will be doing with this new BB, but I am not extremely optimistic, because although during the phone interview I was told that equity research would be involved, a phone interview was all I got. I was never interviewed in person, which I found both extremely bizarre and somewhat unprofessional.

The consulting/VC firm, on the other hand, is a start-up filled with enthusiastic and intelligent people. I had a great feeling about the interview and I know they interviewed a lot of people. But, it's a start-up.

My friend in AM at JPM says that I should go for the VC opportunity because it is more targeted to investment banking and I already have a PWM internship at a different BB, anyway.

I am also leaning toward this decision, but I wanna hear more opinions on this -- I am really stuck and I have to decide by tomorrow.

Given that I already have a PWM internship at a BB and I have perfect GPA etc., what sort of experience will add more to my resume and get me more calls in the fall and spring?

Thanks in advance; I know this was a long post.