Hey folks, new member here and I'm completely new to double edged safety razors. After reading about them for a bit I jumped in and purchased a Merkur 42c based on some reviews and the fact that I like the look. Shaved with it last night and was impressed with the results and enjoyed the process, so already considering a few different options. What I would like to know is which 3 piece razor brands are compatible? I have a Lord L122 coming that I know is compatible with the Merkur handle I have, but curious if other brands can be swapped as well. How about Parker and Merkur? The idea of Frankenrazors are interesting to me as I can see loving a handle but not a head and vice versa. Any info on this and pics of swaps you've done would be appreciated. Thanks!