Great question!
I have the Klanghelm meters. Maybe its my eyes, but I find the needles a bit difficult to work with when comparing across two meters. For example, I have a meter before a plug and another after, and I want to level match the plug using the meters. Those two bouncing needles - even with a longer hold time, are a pain to me. The Dorrough meters are large, fast, and bright. It really is easier to see what's going on in the music - especially when just glancing across multiple meters at the same time. You can make the horizontal or vertical, and you can resize them - which is great.
Download the demo and use them for an hour or two. You'll either be convinced they are better - or you'll decide you don't need them; I don't think you'll be undecided. :)
I don't know that I'd pay $200 for meters - I think I got them around $99 on a sale and am very happy that I bought them. If only you could integrate them in Sonar in place of the console view meters... :)