We looked at both before deciding on Redwood. To me the Redwood offered more higher end features than landmark, and we just liked the interior better (styling). They are very similar, yet very much different.
I would say on the scale of bottom to top end units, they are probably very competitive. They both sit on the same frame, with the same 6 point leveling. After that, the Redwood steers towards alternatives to Dometic such as Coleman, Norcold, Carefree awnings, etc., whereas we noticed Landmark was almost all Dometic. Don't know if that is good or bad, but it is a difference between the two.
I have never spent the night in a Landmark, but I can tell you the Redwood bed is perfect for us as is, the furniture is perfect as is, the unit inside is quiet to road noise, the air conditioners are surprisingly quiet with the new centralized return air ducts, the water pump is whisper quiet, we don't hear the dishwasher run in the living room, even the furnace is amazingly quiet. It is a super comfortable rig.
I wouldn't beat yourself up thinking you are trading up or down, as they are probably in the same class. Fully equipped, I think the Redwood offers more than was probably even available on the LM.
As a start up company, I'm sure Redwood may have to overcome some growing pains, but it wasn't but a few years before that Heartland was in the same boat.You get a little extra attention I think from a new builder.
Brad & Dory - Lone Tree, CO
CURRENT - 2013 Itasca Meridian 42E/2013 Wrangler 4dr Sahara
SOLD - 2014 Redwood 36RL/2014 F350 DRW