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Treadmills

NordicTrack T Series 6.5Si Treadmill vs ProForm Pro 2000

Quick verdict

Winner on Gym Score: ProForm Pro 2000 (73)

The ProForm Pro 2000 is the better treadmill in nearly every measurable way — bigger motor (3.25 vs 3.0 CHP), longer deck (60" vs 55"), 14" touchscreen with iFIT integration, and -3% decline that the Horizon lacks. The Horizon's only advantage is price (typically $400-600 less). If you can stretch the budget, the ProForm is the right answer. If you can't, the Horizon is a competent 2-3 year starter at under $1,000.

Choose NordicTrack T Series 6.5Si Treadmill if…

Choose the Horizon if your budget caps at $1,000, you walk or jog under 5 days a week, and you accept that this is a starter machine you'll replace in 2-3 years.

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Choose ProForm Pro 2000 if…

Choose the ProForm Pro 2000 if you want a 60" deck for serious running, will commit to iFIT for trainer-led workouts, and want a treadmill that lasts 5-7 years.

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Horizon Fitness NordicTrack T Series 6.5Si Treadmill product photo
Best for
  • · First-time treadmill buyers running 3 to 5 miles a few times a week
  • · Casual exercisers who want a real treadmill at a sub-$1,000 entry price
  • · Buyers under 6 feet tall whose stride fits a 55-inch deck

Spec-by-spec

SpecNordicTrack T Series 6.5Si TreadmillProForm Pro 2000
Motor3.0 CHP
Deck Size20" x 55"20" x 60"
Top Speed12 mph
Incline0-15%-3% to 12%
Motor (CHP)3.25
Max Speed12 mph
Max User Weight300 lb

NordicTrack T Series 6.5Si Treadmill

Strengths
  • +Under $1,000
  • +3.0 CHP motor
  • +Bluetooth speakers
  • +Folds flat
Weaknesses
  • Shorter deck (55")
  • 10-year frame warranty (not lifetime)
  • Display is basic LCD

ProForm Pro 2000

Strengths
  • +3.25 Chp Motor
  • +60" Deck
  • +Ifit Integration
Weaknesses
  • Ifit Subscription Pushed Hard
  • Folding Hinge A

The real tradeoff

iFIT lock-in is real on the ProForm — the experience is designed around a $39/mo subscription, and the touchscreen feels half-useful without it. Add 5 years of subscription cost and the gap between the two machines widens significantly. Horizon offers passive Bluetooth pairing (works with third-party apps) without subscription pressure. Deck length is the other gap: 5" of belt length matters more than people realize once you're running 7+ mph.

Skip both if…

Skip both if you want a no-subscription treadmill with serious warranty backing. The Sole F80 at /product/sole-f80 sits between these two in price and beats both on warranty length.

Buyer questions

Is iFIT worth $39/mo for the average user?

If you use it 3+ times a week for trainer-led runs, yes — the content library is large and the auto-adjusting speed/incline genuinely improves workouts. If you'll use it once a month, no — pure manual mode treadmills (Sole, Horizon) give better long-term value.

How does the Horizon hold up over 3 years of daily use?

Reports are mixed. Light users (walking, occasional jogging) typically get 3-5 years without issues. Heavy users (running 5+ days, over 200 lb) report belt and motor problems closer to 18-24 months. The 3.0 CHP motor is the weakest link.

Can the ProForm Pro 2000 fold flat enough for apartment storage?

It folds to a vertical position and locks, but it doesn't lay flat. Footprint is roughly 40"x35" when folded — needs a designated corner or closet, not a slide-under-bed solution.

Full review: NordicTrack T Series 6.5Si TreadmillFull review: ProForm Pro 2000All Treadmills