Buy the REP Foldable Incline Decline Bench.

Same money, sturdier steel, and no folding seam poking you on decline.

What was compared

1. No painful seam when you decline
The Bowflex 5.1S splits its pad to fold flat, and reviewers say that seam causes discomfort on decline work. The REP frame folds without cutting the pad, so decline sit-ups and presses stay comfortable.
2. Steel and welds that do not flex
Owners across both products praise REP's frame and weld quality, while one Bowflex 5.1S owner flatly calls it garbage and unstable. A bench that shifts under you is a real risk, not a nitpick, every time you rack a bar over it.
3. Rated stable well past normal use
REP owners report confidence loading serious weight, while Bowflex reviews flag wobble as load increases. Most home lifters bench well under either limit, but the margin matters the day you add plates.
4. A brand that answers when it breaks
REP staff are active in fitness communities fielding real support questions, a pattern not mentioned for Bowflex here. For a bench you will lean on for years, having someone to call matters more than a spec sheet line.
5. Bowflex is 20 dollars cheaper. Ignore it.
At $329 versus $349.99, Bowflex saves you 20 dollars up front. That gap disappears fast against a bench one owner calls unstable and uncomfortable on decline, which is the exact use REP handles cleanly.