Boutique M&A vs. MM Equity Research

Hey WSO,

First post on here, been hanging around for awhile. Really appreciate all the support/guidance y'all provide. I have a decision to make soon between two opportunities in the same city and I'm looking for the best path to open doors down the road. I know when the time comes I'll be pressured into a final decision pretty quick, so just trying to go thru thought exercises a couple days ahead of time.

Bit of background: Non-target, 23yrs old, 1 year in PWM. Currently in a smaller metro area (think Denver, Nashville, Atlanta, Seattle), where the two roles are located. Absolutely interested in PE, HF, Consulting, Corp. Development roles in the future, but not dead-set on anything in particular. Would also like to eventually position myself to cut my teeth further in a bigger market (NYC, SF, Chi, etc.) if possible.

Option A: IB Analyst (M&A) at a Boutique/Low MM. Regional bank with a solid reputation that's growing their broad-based M&A practice in-house (they currently have about 25-35 bankers). Therefore, I'd be the only analyst solely focused on M&A. I feel like the role would definitely sharpen my modelling skills and allow me to take on some hefty responsibilities working on live deals. From a career perspective, M&A seems to be the total package even if it's on a smaller scale.

Option B: Equity Research Associate (Healthcare). Middle market firm (think HW, Baird, HL, Stifel, WB) has great coverage and operates in an exciting industry. Obviously no transaction experience provided here, but a more well known brand name, more structured training, and ability to interface with executives of larger firms might be the move while I'm young.

Compensation and work hours make no difference whatsoever (and are pretty much the same as far as I know). As mentioned, just want to keep options open and hear your take. I'd be more than happy with either one.

Sorry for the long-winded message. Any advice is much appreciated. Thanks in advance for everything!