The Quick Verdict
Get the CaddyTek CaddyCruiser ONE V8. At $219 list it's $111 cheaper than the PX4, it folds to a known 17 × 14.2 × 26.4 inches, and it includes a foot brake. The PX4 is worth the extra money if you want dual umbrella holders and Sun Mountain's three-year frame warranty — but those are specific things to pay $111 for, not a general upgrade. Check price at Amazon →
What They Have in Common
Both are four-wheel push carts with a cup holder and a storage console. Both name their fold — CaddyTek's one-click, Sun Mountain's two-step E-Z Latch. Neither publishes an open footprint.
Where They Differ
Folded Size and Weight
CaddyTek publishes a folded size: 17 × 14.2 × 26.4 inches, which works out to 3.7 cubic feet. That 26.4-inch longest dimension is the one to measure your trunk against before you assume it lies flat. Sun Mountain doesn't publish a folded size for the PX4, so there's no comparison to make. You'd need to find one in a store and fold it yourself.
On weight, CaddyTek gives a ceiling of "under 17 lbs" rather than an actual figure. Sun Mountain says the PX4 is 17.2 lbs. Because one is a ceiling and the other is a stated number, calling either cart lighter wouldn't be honest.
Brake
The CaddyCruiser ONE V8 has a foot brake. Sun Mountain's copy for the PX4 doesn't describe one. On a flat course that silence costs you nothing. On a slope where you're lining up a putt and don't want the cart drifting toward the green, it matters — and the CaddyTek is the one with a brake on its spec sheet.
What's in the Box
The PX4 comes with dual umbrella holders, a mesh basket, a valuables pouch, and adjustable bungee straps for the bag. That's the longer list of named accessories. The CaddyCruiser ONE V8 includes an umbrella holder, a phone and GPS holder and a mesh net, and holds the bag with upper and lower straps. If you walk in the rain, both keep an umbrella over the bag; the difference is that the PX4's holders are dual.
The CaddyTek's phone holder is a small convenience that adds up over 18 holes — your GPS is already in your hand, you set the cart in motion, you look down. The PX4 answers with an accessory console.
Warranty
Sun Mountain gives the PX4 a three-year frame warranty and one year on other parts. CaddyTek offers one year across the board. On the frame, Sun Mountain's coverage runs two years longer.
Who Should Buy Which
Get the CaddyTek CaddyCruiser ONE V8 if:
- You'd rather pay a $219 list price than a $330 one and keep that $111 gap in your pocket
- Knowing the folded size before you buy matters — because it does
- You want a foot brake included
- You use a phone or GPS device and want somewhere to rest it
Get the Sun Mountain PX4 if:
- You walk in variable weather and want dual umbrella holders in the box
- The three-year frame warranty means something to you — CaddyTek's is one year
- You prefer adjustable-length bungee cords to the CaddyTek's upper and lower straps for holding the bag
The Bottom Line
The CaddyTek CaddyCruiser ONE V8 is the default here. It publishes its folded size, it has a foot brake, it costs $111 less at list, and it covers the basics a walking golfer actually uses every round. The Sun Mountain PX4 is the pick if those dual umbrella holders or the longer frame warranty are genuinely important to how you play — not as a vague upgrade, but as specific things worth $111.