If you use good quality parts the valve adjustment issue with a Solid is a Myth. Guys like to act as if the Valve covers will be off every weekend or something, such is not the case.
My personal preference is a Solid because of Lifter Failure due to pump up issues and Valve Float. Also I hate the sound of a Hyd set up after it sits for a few weeks on start up with a healthy camshaft. Klackety Klack until the lifters pump back up. Sounds like the motor is going to come apart. I wonder how many people have had their pushrods fall out of the cup or ball of the Rocker Arm while this is going on??