Choosing selling agent

Hi all, I’m currently deciding on a selling agent on a townhouse in inner west Sydney. One agency is relatively young but always with a lot of listings and they are basically the top specialist for that suburb. Agent A (30ish guy) is smart, calm, confident, knows the market, doesn’t over-value - everything that a good agent should be, with great online reviews on ratemyagent. He’s sold many properties in the past 12 months so he works hard. I’ve had more conversations with him and he’s appraised my property and has kept in touch with me.

Another agency is an established chain with less listing volume but more boutique. Agent B is energetic and I like how she interacts with people (30ish female); she’s also got great online reviews and her instagram is also quite customer oriented (rather than self congratulatory). She hasn’t come through the property yet, but I should be meeting her in a couple of weeks.

I think they are basically the top agents for the area and I’m sure both will do a good job, but my gut likes Agent B better (Agent A seems a little laid back for me, but that may be a good thing. They also tend to do in-room auctions, which I’m not too sure about?), so I don’t know if anyone has thoughts on choosing an agent when both seems competent? Does high listing volumes mean they have less time to devote to your property, or does it mean they have a wider network of potential buyers on their books? And also how to tactfully decline an agent’s approaches when they’ve already been liaising with you? Appreciate your thoughts thanks.