The Quick Verdict
Get the MGI Ai Navigator HALO. At $450 less at list, it comes with a built-in GPS screen Stewart doesn't list for the Q Follow, and it folds smaller by volume. The Stewart Q Follow is worth the premium if follow mode matters to you — the HALO needs a separate accessory to do what the Q Follow does natively. Check price at Amazon →
What They Have in Common
Both are remote-controlled electric caddies with downhill speed control, and both fold — the HALO with retractable wheels, the Q Follow with a tri-folding system. Both quote their weights without the battery. Neither publishes a total wheel count. MGI sells the HALO's umbrella and drink holders separately; Stewart doesn't say whether the Q Follow includes either.
Where They Differ
GPS and screen
The HALO has a 4-inch all-weather touchscreen with built-in GPS and Geo-Protect mapped hazards. Stewart lists no GPS for the Q Follow. If you want distances and hazard info on the cart itself rather than a watch or phone, the HALO is the only one of these two that lists it. That's not a small difference at this price point — a standalone GPS unit adds cost and one more thing to mount.
Follow mode
This is where the Q Follow earns its price. Follow mode is built in, and Stewart lists a Bluetooth handset and a smartphone app. MGI calls the HALO's remote next-gen, but follow mode requires the Halo Eye accessory, which is sold separately. If walking without holding a remote is the main reason you're looking at a powered caddy, the Q Follow does it out of the box and the HALO doesn't.
Weight and folded size
Both weights are without battery, so they measure the same thing. The HALO is 3.45 lbs lighter at 27.55 lbs; the Q Follow is 31 lbs. Add a battery and the HALO goes to 33.29 lbs. Stewart doesn't publish a with-battery figure, so there's no equivalent number to compare it to. The HALO is also the smaller fold by volume — 3.3 cubic feet versus 3.7 — but the Q Follow's longest folded dimension is 23.6 inches against the HALO's 27 inches. If trunk clearance is tight, measure that 27 inches against your trunk before assuming the smaller-volume cart fits more easily.
Battery and range
The HALO runs a 24V 299Wh lithium battery rated for up to 36 holes. The Q Follow comes in a 230Wh base battery or a 307Wh upgrade, and Stewart's published range figures don't match either battery it currently sells, so there's no range I can quote. For the HALO, up to 36 holes is two rounds on paper. For the Q Follow, there's no honest answer to "how far will it go."
Warranty and price
The Q Follow carries a two-year warranty on registration. The HALO carries a three-year warranty, though MGI states it only in the user manual; the product page and comparison table don't publish one. At list, the HALO is $2,599 and the Q Follow starts at $3,049 — a $450 gap at the base configuration. Other colours and the larger Q Follow battery push that price as high as $3,599.
Who Should Buy Which
Get the MGI Ai Navigator HALO if:
- You want on-cart GPS with hazard mapping and a dedicated screen — Stewart lists no GPS for the Q Follow
- You're happy running a remote and don't need follow mode standard
- The $450 price difference at list is meaningful to you
- You want a confirmed battery range figure going in
Get the Stewart Q Follow if:
- Follow mode is the reason you're buying a powered caddy in the first place, and you don't want to source a separate accessory to get it
- You're on a course with significant hills and want the downhill braking Stewart lists for follow mode
- The Bluetooth handset and smartphone app fit how you want to run the cart
- The handbuilt construction and LiFePO4 battery chemistry are part of why you're spending this much
The Bottom Line
The HALO is the better default here. It lists for less, folds a little smaller, weighs a little less without the battery, and has GPS built in — a feature Stewart doesn't list for the Q Follow. The Q Follow closes that gap only if follow mode is non-negotiable and you'd rather not add the Halo Eye to the bill. That's a real use case. It's just a narrower one than "most people buying a remote electric caddy."