What They Have in Common
Both are GolfBuddy's Tier 4 rangefinders with slope modes, magnetic mounts, and flag-lock vibration feedback. Either one will get you a yardage fast enough not to slow down play, and both toggle slope off for tournament rounds. At this level, you're not compromising on the basics with either unit.
Where They Differ
Accuracy and Speed
Here's where the PRO earns its price. GolfBuddy publishes a ±1-yard accuracy spec for the LASER 2S PRO, with a 0.15-second measurement time. The aimLITE S? No published accuracy figure at all. That doesn't necessarily mean it's inaccurate — GolfBuddy wouldn't sell a rangefinder that was wildly off — but the fact that they're not putting a number behind it is telling. Probably because the PRO's ZST Plus technology is genuinely faster and more precise, and they want to protect that distinction. Either way, if you want a spec you can point to, the PRO has one and the aimLITE S doesn't.
Size and Weight
Counter-intuitively, the cheaper rangefinder is the bigger one. The aimLITE S is 106 x 75 x 42mm and 177g. The PRO is 99.4 x 65 x 36.3mm and 161g. That's not a huge difference in practical terms, but the PRO is noticeably more compact — closer to what you'd expect from a modern slim rangefinder. If you're slipping it into a small bag pocket or wearing it on your belt with the included clip, those dimensions add up.
Battery: Rechargeable vs. CR2
This is the most real lifestyle difference between the two. The aimLITE S has a built-in lithium battery with USB-C charging. The PRO runs on a CR2 3V battery with a rated 5,000+ actuations.
USB-C sounds more convenient until you're two rounds deep without a charger and you're not sure how much juice is left. CR2 batteries are at every pharmacy and most gas stations, and when the PRO dies you swap it in 30 seconds. The PRO also gives you a clear endpoint — 5,000 actuations — whereas the aimLITE S doesn't publish runtime at all, so you're guessing. If you play a lot and don't want to babysit a charge, the replaceable battery is genuinely more reliable on-course. That said, if you'd rather just plug in overnight like your phone, the aimLITE S fits that habit.
Feature Set
The PRO has a few things the aimLITE S doesn't: Buddy Mode (which gives you distances to front, middle, and back of the green — useful when you're between clubs), Scan Mode for continuous measurement across multiple targets, and triangulation. The aimLITE S has 6.5x magnification versus the PRO's 6x, which is a slight edge on paper, but in real-world use that half-magnification difference is essentially invisible.
Who Should Buy Which
Get the GolfBuddy aimLITE S if:
- You want a rangefinder you can top off via USB-C the night before a round without keeping batteries on hand
- You prefer a single-button simplicity and don't need Buddy Mode or Scan
- You're buying your first rangefinder and want to spend under $100 to see if you'll actually use it consistently
- You don't care about published accuracy specs and trust it'll be close enough
Get the GolfBuddy GB LASER 2S PRO if:
- You're the golfer who plays early morning weekend rounds and wants a rangefinder that's always ready — no charge anxiety, just swap a CR2 and go
- You want confirmed ±1-yard accuracy, not a blank spec sheet
- You use front/middle/back distances when you're between clubs on approach shots and want Buddy Mode doing that math for you
- You prefer a slimmer, lighter unit that fits more naturally in a cart or walking bag pocket
The Bottom Line
The $50 gap between these two is real money, but the PRO earns it. You get published accuracy, faster measurement, a more useful feature set with Buddy Mode, and a smaller package — all running on a battery that won't strand you mid-round. The aimLITE S isn't a bad rangefinder, but it's harder to recommend when the same brand makes a clearly more capable unit for fifty bucks more. Spend the extra half-sleeve of balls and get the better tool.
Get the GolfBuddy GB LASER 2S PRO.