I know it’s been a while since this thread was active, but I just wanted to enforce what Jeralee wrote – as with any harp maker you can get shitty ones or great ones.
I have an Aoyama Musa that I bought from another harpist three years ago. It’s from 1989 and has an incredibly full, warm sound. I’ve played and do still sometimes play several different L&H (23, 23 gold, 85CG) and also a few Venus harps, and each harp is really just different. I LOVE the tone of my Aoyama, it is beautifully warm and round. The spacing is a little bit wider than the L&H’s but as with anything you get used to whatever you play, I don’t think one of them is easier than the other.
Play many different harps and find whatever sound you like better. Don’t get hung up on specific brands or models – listen for the SOUND!