I have a coupla' harps with Lumbert bars, and I like the workings of them a lot, along with the fact that they open up so much more playing room- but my other, and main harp, is an Orthey with fine tuners. The tuners are amazingly helpful- but I understand that they are difficult to retro fit on a harp. Worth getting a pro to do- and there are several guys around who can do it.