Short answer: Both are professional systems with hidden track and color plus white. If you want the most from the app and a published price, we'd pick Nex-Gen. If a Gemstone dealer quotes you, ask for the warranty terms in writing, because dealer listings don't agree.
Side by side
| Nex-Gen | Gemstone | |
|---|---|---|
| Who installs it | Certified Nex-Gen dealers | Authorized Gemstone dealers |
| Kansas City price | $24 to $35 per foot installed (published) | Quoted by the dealer; not published |
| Lights and white | RGBW: true warm white plus 16 million colors | RGB plus warm white (RGB-WW), per a KC dealer |
| System voltage | 24V residential (24V, 36V and 48V options) | Not stated |
| Weather rating | IP68, tested from -40°F to 140°F | IP67 or better, per dealers |
| Rated life | 50,000 hours | 50,000 hours, per dealers |
| Warranty | Lifetime on the lights, 10 years on hardware; labor not included | Listed differently by different dealers; confirm in writing |
| App | Lumina: mapped roofline, Game Day, Neighborhood Sync, Design Studio, Lumina AI | Gemstone app with zones, timers, music sync and calendar "Autopilot" |
| Voice and smart home | Siri Shortcuts on iPhone | Alexa and Google Assistant, per dealers |
| Schedules without internet | Yes, schedules run on the controller | Not stated |
| Kansas City installer | Yes. Nex-Gen is headquartered in Blue Springs | Yes, through a south Kansas City dealer |
"Not stated" means we couldn't find it on the brand's public pages. Nex-Gen warranty: Nex-Gen warrants its LED lights for the life of the light (rated about 20 years, or 50,000 hours) and its hardware, such as power supplies, controllers, cables and track, for 10 years. Labor for warranty replacements is not part of the Nex-Gen warranty, so ask your installer what workmanship coverage they include.
Where Gemstone does well
- Big national footprint and brand recognition.
- Calendar "Autopilot" that plans holiday scenes for you.
- Works with Alexa and Google Assistant, according to dealers.
Where Nex-Gen comes out ahead
- Roofline mapping, so you can light "just the peaks" by name in Lumina.
- Schedules stored on the controller keep running if your Wi-Fi drops.
- Game Day and Neighborhood Sync (both patent pending) are unique to Lumina.
- Published Kansas City pricing, so you know the range before anyone visits.
- Headquartered in Blue Springs.
Who it's best for
Gemstone: Homeowners who want a well-known national brand with a local dealer.
Nex-Gen: Kansas City homeowners who want a professional, hidden install, an app that knows the shape of their house and a local company for service.
What it costs in Kansas City
Nex-Gen publishes its Kansas City pricing: about $24 to $35 per linear foot installed. A typical front-of-home install of 150 to 200 feet runs about $3,600 to $7,000. Gemstone pricing is quoted by the dealer, so get both quotes for the same footage and compare line by line. Our Kansas City cost guide has the full breakdown.
Questions to ask any installer
- Is the warranty in writing, and who pays for labor if a light fails in year three?
- Do schedules keep running if my Wi-Fi goes down?
- Will the track be color matched to my trim?
- Can I light just part of the roofline, like the peaks?
- Is the price per foot, and what's included?
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