Smaller notebook manufacturers are usually more reliable than their larger rivals. Of the top nine, ASUS has lowest tracked breakdown rate with fewer than 10% of its notebooks failing in past two years. Toshiba, Sony and Apple also have better-than-average performance and are either just over or under same figure. The higher volume companies largely see significantly worse long-term prospects. While Dell's only slightly less reliable, failure rates jump significantly for Lenovo, Acer and its sub-label Gateway. HP fares worst with about 16% of its portables breaking down. Researchers project that failure rates should go up for many of these systems over a three-year span but that rankings should remain consistent, if exaggerated: where 15.6% of ASUS' systems are poised to fail after three years, more than a quarter of HP's PCs (25.6%) should suffer same fate, SquareTrade revealed.