looking to upgrade from hybrid to hard sided for room...

The only advice that I can give is to start cruising the websites, and look for a floorplan or three that fit your needs. then come back with specific questions regarding manufacturer, plusses, minuses, etc. My preferences and your preferences may be very similar, or nothing alike...

BTW - I did the switch (you may get flamed by some HTT owners for calling it an "upgrade" - I did!) a few years ago, and couldn't be happier! NO MORE WET CANVAS!!!!!