Hi,
I've used both versions, and although the difference was slight, I did notice a little increased efficiency with the ubiquinol versus the CoQ10 since it is the more readily assimilated form of CoQ10.
But the difference was minor but the price isn't

so I am now using the Vitamin Shoppe gel cap 150 mg version.
I do notice a difference in absorption with the gel caps over the regulars caps; plus the caps contain stearic acid, which is a saturated fatty acid used to lubricate the machinery that makes the capsules and from what I've read, it's not particularly healthy.
Cheers,
BB