So I purchased a 34c on a whim. I use a maggard V3 as a daily driver. I shaved with the 34c today for the first time. It is more mild than the V3. It took three passes, plus touch ups, to get the same closeness as two passes with the V3. I had no irritation and used Stirling Phoenician Dreamcicle.
I think it is impossible to cut yourself with the merkur 34c. The build is good and the angle is easy to find. I did use 4 day old polsilver SI so that may have affected the shave some. I am using a 7 day gsb on the V3 with no increased passes needed. I am normally a two pass shaver with touch ups so HAVING to do more passes may just take some getting used to.
I think the merkur 34c is a good razor. I am not sure if it is a fit for me.