I have not seen the Lippert Solid Step so I can't comment on it.
A LOT of Heartlanders have upgraded to the Glowstep Revolution by Torklift and everything I've heard about them is positive.
I am evaluating the MORryde Step Above - Zero Gravity steps. The quick review is: I really like them. The longer review is: They take some getting used to in terms of setup. But for me, so far, it's been worth it.
To elaborate a bit...
When storing the steps, you simply open your entrance door (and screen door) fully, then lift up on the steps until they are vertical. Then close your door. Easy! Now, the concern over water or debris on the steps getting into the coach is valid. What I do is keep a small broom near the steps and simply sweep them off before I store them. We also have a thin entry rug on the floor, just inside the RV - so no worries for us.
When deploying the steps, here's where there's a bit of a learning curve. I do NOT deploy the steps until the coach is in its final position (Leveling or not). Then I open the entrance door (and screen door) fully, then pull down on the steps and lower them to the ground. Then I look at the position of its threshold and how tight it is to the entrance door threshold and I look at the position of the feet on the adjustable legs. the goal is to get the steps level and the steps threshold tight to the entrance door threshold. To do so, I simply adjust the length of the leg on each side of the steps. This takes only a moment to do.
Note that it's unlikely that the next time you stop and take out your steps, that the ground surface will be the same as the previous site. So, some leg adjustment "may" be needed each time you deploy the steps. A bit of a pain at first, but once you understand what's going on and what you need to do, it adds maybe 20 seconds to the process.
As the Solid Step and the Step Above are full staircases that do not collapse, bear in mind these are all-or-nothing products. That is to say that unlike the GlowStep Revolution steps where you can keep the stairs tighter to the coach when needed, with the all-or-nothing design, you must have sufficient horizontal distance out from the doorway to fully deploy them.
Here's a link to my picture gallery for the Step Above - Zero Gravity on my current demo coach. Note that this will be the standard steps on the Landmark going forward.