Foam steps or wooden ramp for a high bed?

For beds taller than about 24 inches, verified-purchase reviewers and Chihuahua/Maltipoo subreddit threads we read favor either tall multi-step foam stairs or an adjustable-height wooden ramp. Foam is lighter and softer on paws; wood is more stable for heavier dogs but harder underfoot. The Spruce Pets noted in their roundup that height-adjustable wooden ramps adapt best across furniture heights.