Originally posted by Neo_ It depends on what you need it for, I own all 3 of them, and two yn 560s
Do you need it for shooting events?save for the 58 and make the 50 become your second flash.
Do you only need it for studio, strobist stuff? buy the yongnuo.
That's what I do, if I nedd to go to a party, wedding or whatever I'll bring my metz(es), If i'm doing a portrait, still life, product shooting, i'll use my Yn560s or a combination of the four but all in manual mode.
If you just want a second pure TTL flash consider the metz 44af1, I've had it in my bag for a while just in case my 48af-1 failed for some reason.
I agree - it makes sense to save for the 58. It's just a powerhouse and, once you figure out the unexplainably bizarre menu options, it's probably the best flash for Pentax out there. And I feel your pain on the 48 failure - I had a 58 explode on me at a wedding. Scared the crap out of me. But Manfrotto fixed it and returned it to me like new in less than two weeks for about $60.