Specifically for a 10x10? Not really, though my answer would be 'high bar' because it is more readily transferable. In general - use the low bar squat to overemphasize the posterior chain and move maximal weight. So, if you're training to be a 200m sprinter or a power lifter, use the low bar squat. If you like being generally fit, strong, and mobile (and especially if you do a bit of olympic lifting) the use the high bar squat. It forces you more upright and engages the quads a bit more.
A 5x5 protocol would seem to emphasize raw strength whereas the 10x10 format would seem to emphasize muscular size, strength, and strength endurance over raw strength (because the weight is obviously sub maximal for a 10x10).