BaBylissPRO Ultra-Sleek 1.5" Flat Iron vs BaBylissPRO Nano Titanium Prima Ionic Straightener

Both are BaBylissPRO nano titanium flat irons with ionic tech, instant heat and dual voltage, so the choice comes down to plate width and heat ceiling. The Ultra-Sleek's 1.5-inch extended plates cover more hair per pass and suit thick, long or coarse hair; the Prima's 1.25-inch plates are easier to control near roots and on medium-length hair, and it reaches 465°F versus 450°F. Owners report the Prima is rated 3.8 out of 5 from about 935 ratings, a middling score that points to inconsistent results for some buyers, while the Ultra-Sleek's wider floating plates draw praise for speed on long hair. Buy the Ultra-Sleek for bulk straightening; step to the Prima only if you want the extra heat and narrower plates.

• Choose the BaBylissPRO Ultra-Sleek if you have long, thick or coarse hair and want wide floating plates to straighten it in fewer passes.
• Choose the BaBylissPRO Prima if you style medium-length hair, work close to the roots, or want the higher 465°F top setting.