The Quick Verdict
Get the Garmin Approach Z10. At $50 less, it matches the TL1 on slope, 6x magnification, ±1 yard accuracy and a cart magnet, and adds Bluetooth connectivity, Range Relay, a Find My Garmin feature, and vibration lock confirmation. The Voice Caddie TL1 is worth a look if you specifically want an OLED display with multiple brightness levels and find the dual-color readout easier to read in your conditions. Check price at PlayBetter →
What They Have in Common
Both are same-tier rangefinders with 6x magnification, ±1 yard accuracy, and slope mode built in. Both use a CR2 replaceable battery, carry a cart magnet, and give you yardage to the flag as the core job. At this price point, neither one is going to embarrass you.
Where They Differ
Display Technology
This is the biggest real-world difference. The Z10 uses a transparent PDLC display — the kind that overlays yardage on your view through the lens. The TL1 uses a dual-color OLED with three brightness settings you can adjust. Honest take: I'd guess the OLED is the easier read in low light, and brightness control is the kind of thing you'd want at dawn or dusk. If your eyesight prefers a bright readout you can turn up, the TL1 offers that and the Z10 doesn't. Neither is objectively better — they're different design philosophies — but it's the one choice on this page that's actually personal.
Connectivity and Smart Features
The Z10 has Bluetooth; Voice Caddie lists none for the TL1. That opens up Range Relay, which sends ranged distances to a compatible Garmin watch, handheld or the Garmin Golf app, and Garmin adds Find My Garmin for the moment you leave it sitting on the cart after the 17th hole. These aren't features every golfer needs, but leaving a $300 rangefinder behind is the kind of thing that happens on a distracted Tuesday afternoon, and Find My Garmin is the kind of quiet insurance you don't think about until you need it. The TL1 has no equivalent.
Speed and Targeting
Voice Caddie advertises a 0.1-second response time and a Pin Tracer feature. The Z10 doesn't make a specific speed claim in its feature set. Probably both are fast enough that you'll never notice the difference mid-round, and I haven't tested whether Pin Tracer helps with a bunker or grandstand behind the flag.
Build, Weight, and Range
The TL1 is 0.8 oz heavier and comes with a silicone sleeve included. Small difference, but heavier is heavier. The Z10 also reads out to 1,200 yards to reflective targets (vs. 1,000 for the TL1), though Garmin's flag figure is 350 yards and Voice Caddie doesn't publish one for the TL1, and 350 is plenty for golf. The Z10's IPX4 water resistance is a stated spec; the TL1 is listed as "water-resistant" without a specific rating — call it a slight edge to Garmin on clarity there.
Who Should Buy Which
Get the Garmin Approach Z10 if:
- You want the better value: the Z10 is $50 cheaper and has more features, which is a straightforward win
- You're already in the Garmin ecosystem and want yardages to push to another device via Range Relay
- You've ever walked off a hole and had that sinking feeling about where your rangefinder is — Find My Garmin is legitimately useful
- You play a lot of rounds where the see-through overlay display matches your natural way of reading the shot
Get the Voice Caddie TL1 if:
- You play early morning rounds when it's still dim and you want an OLED display with adjustable brightness you can dial up — the 6am October tee time crowd will appreciate this
- You regularly shoot targets where a bunker, fence, or structure sits directly behind the flag and you've had rangefinders lock the wrong thing
- You prefer a silicone-sleeved unit that feels more protected right out of the box without buying an aftermarket case
The Bottom Line
These two rangefinders are close, and there's nothing wrong with the TL1. But the Z10 is $50 cheaper and brings more to the table: Bluetooth, Find My Garmin, and Range Relay on top of the same core accuracy and slope performance. The TL1 counters with an OLED display with three brightness levels, Pin Tracer and a 0.1-second response claim — real things, just not ones that outweigh the price gap for most golfers. If the display difference matters to you specifically, it's worth the extra $50. Otherwise, the math is pretty clear.