The YT Jeffsy 29 offers solid climbing performance and reasonable downhill skills. The Jeffsy is a nice option for long days in the saddle where your not hyperfocused on a single ride characteristic. The suspension design is decisively harsh and tends to beat you up on rougher descents. Bigger, rapid-fire hits force a jackhammering ride. This can knock you off line. The 29-inch wheels rolling well and keep your momentum through rock gardens. The big-wheeler corners with grace, but not with 29er defying skill. Direct steering and compact geometry grant sharp steering and comfortable climbing. The stiff 32:42 gearing is another story. Though it can handle black diamond terrain with admirable stoicism, the Jeffsy is way more fun on mellower, flowing trails without a lot of rock. YT has trouble keeping this little black and red beauty in stock. At $2,999 for the nearly flawless AL One 29 build, it's not hard to see why.
The Jeffsy performs best on smooth terrain when only dabbling in technical downhills. New-school flow trails, for instance, are excellent aboard this bike. The Jeffsy can handle anything, making it's a solid choice for a new rider who's not sure what type of terrain they want to ride. The Santa Cruz Hightower is a better climber and far superior descender. If you want sharp handling and a little less aggressive ride, consider the killer ninja-like Ibis Ripley LS. Want to crank up the rad-factor? The hard-charging Santa Cruz Hightower LT is far more aggressive.