i've run two similar combos, not identical by any means, but from the switch from hydraulic to solid, there was a noticeable difference in driveability going to the solid cam. the idle was better, the off idle response seemed better, the hydraulic while it would pull just fine. things with the solid seem to happen just a tad quicker. both were comparable, and other than that i have no dyno numbers or timeslips to back up the feelings, just what i observed. i was happy with the hydraulic, but wanted to try the solid. i think the ramp profiles were a little steeper on the solid. again anecdotal at best and it was a bunch of years ago. today if budget would allow i'd go roller cam and be done with it. solid did add some maintenance with lashing vales about 4 times per year and mostly that was just checking but did take about a hour or two depending on how many interuptions i had.