The Quick Verdict
Get the GolfBuddy GB LASER 2S PRO. At $149.99 versus $239.95, it's $90 cheaper and it doesn't give up anything that matters on the course — slope, ±1 yard accuracy, 6x magnification, pin-finding vibration. The Nikon COOLSHOT 20i GIII is worth considering only if Nikon's optics reputation or the five-year warranty genuinely moves the needle for you. For most golfers, the GolfBuddy is the obvious call. Check price at Amazon →
What They Have in Common
Both are tier-4 rangefinders with 6x magnification, slope mode, and ±1 yard accuracy. Both run on a CR2 battery. Both fit in a pocket or clip to your bag. For the core job — pointing at a flag and getting a number you trust — either one gets you there.
Where They Differ
Price and What You're Actually Paying For
Ninety dollars is real money. That's a sleeve of Pro V1s and a post-round beer. The Nikon costs $239.95 and the GolfBuddy is $149.99, so the question isn't which is better in a vacuum — it's whether the Nikon is ninety bucks better in practice. My read is it isn't, for most people.
Range and Accuracy
Here's where the GolfBuddy pulls a quiet upset. It's rated to 1,093 yards; the Nikon tops out at 800. Neither number matters much for flag distances, but the GolfBuddy's extended range means hazard yardages, back-of-green numbers, and layup distances on longer holes are all in play. The accuracy story is also worth noting: the Nikon is ±1 yard to 100 meters, then ±2 yards beyond that. The GolfBuddy holds ±1 yard across the board. Neither difference will show up in your scorecard, but on paper the GolfBuddy is the cleaner spec.
The GolfBuddy also reads in 0.15 seconds and includes a scan mode, a Buddy Mode that displays multiple distances simultaneously for club selection, and a triangulation feature. Whether you actually use triangulation regularly is debatable — I'd guess most people try it twice and forget — but scan mode for tracking a moving flag is genuinely useful.
Optics and Build
Nikon's optics reputation is real. The multilayer lens coating on the COOLSHOT 20i GIII isn't marketing filler — Nikon makes camera lenses for a reason, and that carries over to clarity and brightness in a rangefinder. The GolfBuddy's specs don't mention lens coating at all, and the display type isn't published.
The Nikon is also slightly lighter (130g vs 161g) and is explicitly rainproof. The GolfBuddy lists no water resistance rating. That matters if you regularly play in drizzle or early-morning dew-soaked rounds where you're pulling the rangefinder out of a wet bag. The GolfBuddy has a magnetic mount and belt clip included, which is a small practical edge in everyday carry.
Warranty
The Nikon comes with a five-year warranty. The GolfBuddy's warranty terms aren't listed in the specs. Seems like Nikon is using that five-year coverage to justify part of the price premium — and for a device you're going to use three or four times a round for years, that's not nothing.
Who Should Buy Which
Get the GolfBuddy GB LASER 2S PRO if:
- You want a fully-featured slope rangefinder and don't want to spend $240 to get one
- You play long courses where 800-yard max range might occasionally leave you short on hazard distances
- You're the golfer who clips the rangefinder to your bag and grabs it without thinking — the magnetic mount and belt clip are already in the box
- You want one consistent ±1 yard accuracy number across all distances, not a two-tier spec
Get the Nikon COOLSHOT 20i GIII if:
- You play in rain or early-morning wet conditions regularly and want a rangefinder that's rated for it — the GolfBuddy has no stated water resistance
- You're the type who keeps gear for five-plus years and the warranty actually factors into your decision
- Optics quality is your priority — Nikon's multilayer coating and optics pedigree are genuinely better than a brand that doesn't publish its lens specs
- You tee off at 6:30am when the light is flat and the green is still in shadow, and you want the clearest possible image to lock on the flag
The Bottom Line
The GolfBuddy GB LASER 2S PRO does the job for $90 less, with longer range, consistent accuracy, and practical carry features already included. The Nikon COOLSHOT 20i GIII earns part of its premium with better optics, a five-year warranty, and rainproof construction — but those are real-world advantages only in specific situations. If you play wet weather golf often or you're genuinely particular about optical clarity, the Nikon has a case. For everyone else, spending the extra $90 doesn't buy you a better rangefinder — it buys you a better-branded one.