Best ball fir…

Depends on if you need to reduce or increase spin in the short game/long game. There isn't a set ball for swing speeds, but a firmer ball typically generates faster ball speeds in higher end golf balls.

It does not work that way. Take into account that someone who swings a driver 105 will still hit 95 and 85 shots throughout the round. Swing speed is irrelevant. Need for spin, preferred ball flight, feel, those are the factors that need to go into your choice in balls. There is no such thing as a "best ball", only the ball best for what you need and want in your specific game. Just notice the fact that all tours (PGA, LPGA, DP, etc.) all use different balls including some with ProV1 and others with ProV1x. They have similar swings but use the ball that gives each one of them the flight performance they individually desire. Find the one that works best for you.

This is myth from at least the days of 90 and 100 compression balls in the 80’s and 90’s. While a driver speed of 100 mph is one measure, the same ball needs to perform well with a 7 iron. Or at a speed lower than 85 mph.
As Dale V and myself will attest, Titleist ends up fitting more senior/under 90mph driver swing speeds in the Pro-V1x. The successor to the old 100 compression Tour balls. We benefit from the higher launch and increased spin compared to the V.
Regardless of the driver club head speed, each of us has different requirements. Basically launch window, carry, and rollout. Price can also come into play. At slower speeds, some prefer a softer feel. That’s why Titleist offers 8 models. Testing various options is still best starting with short game and working back to driver.
The best performance with the short game is with a urethane cover. If money is not an objection, that narrows the list down to 4 models.

The answer for all 3 is "range balls"
As my age keeps moving in the opposite direction of my swing speed, I still find that my best shots are on the range.
Shorter walk to my next shot too!!!

I agree with all responses. My selection criteria is a soft-feeling ball which is responsive around the green...therefore AVX.

I'll give my two pesos. In my personal opinion I dont exactly read into some of these stats about swing speed, compression, ball for specific handicap, etc. I collected different golf balls over a number of rounds and putted them in my house, LISTENING to how they sound off the club face. I even bought a few different sleeves to play rounds with and see how I like them. Through my test: I landed on the Titleist velocity because of the crisp click it makes when struck well. NOT the "soft" golf balls recommended for my 20HCP 90mph driver swing speed. HATED that squishy, marshmallow feeling off the driver and the dull, muted sound of the "soft" golf balls. Regardless of the name on the ball my swing is the bigger problem. My inconsistencies mean I will duff at least 1 chip and duck hook or banana slice one off the driver every round and the manufacturer of the ball makes no difference. But I am no pro.