I'm highly interested in making a move there down the line and would appreciate some discussion surrounding the topic.
Currently in consulting which I think provides for a decent transition story that makes sense in terms of skills learned.
PE is better for you. Besides, they do hire quite a bit of talent in operations for the portfolio companies.
If you insisted in going to ER, sell-side is the better option. It offers you much better training.
One thing about buy-side, most managers tries to hire for talent but their process only screens out good journalists.
I work for a firm which specialises in equity research outsourcing. It's probably the most interesting job I can think of the finance/ management field, other than consulting - which ironically is something i would look at getting into in the future. Since I'm into outsourcing, I've sampled working for both the buy-side and the sell-side. Basically what I've found is that I prefer the sell-side as financial modelling can become a bit of a chore once you've done so much of it.