If you want a knife with a more heavy duty feel and is a true tank, go with the umnumzaan. If you want something a lot different than what you already have, you cant go wrong with the mnandi. I used to have the 3 umnumzaan versions (Regular, Tanto, Wilson Combat ). I sold the Wilson Combat as the grooves dug into my fingers when gripping. I still have the regular umnumzaan and the tanto version. I would like to get the newer version of the umnumzaan because I liked the improvments found in the WC version, just did not like the sharp grooves. I really like the mnandi. I used to have 5 of em, now I am down to just one. You can get them in a huge variety of colorful grain woods. Pretty much any wood you like ( light, dark, or something inbetween ) can be found in the mnandi. Either way you cant lose, and in the end you will have both anyways. Congrats on your CRK collection.