These razors are all similar the way they shave. All three are considered mild shavers. Thus less chance to nick yourself when shaving. But what makes them different from one another is the size and length.
Merkur 23C and 38C both are longer. Both are 2 cm / 0.8 in longer than the 34C. This makes it more suitable for those that have bigger hands or prefer longer handles. 23c is a three-piece safety razor, so switching razor blades is somewhat more bothersome. It is also 17 g lighter. It has knurled handle with the same quality knurling as the Merkur 34C. And just like the smaller and sturdier HD, it provides mild shave.
Merkur 38C is heavier. It weighs 111g or 3.9 oz and has a barber-pole handle. The head is the same two-piece design as Merkur 34C. The added weight makes it a little more aggressive but it still quite mild. It mostly comes down to what you prefer. Some men don’t enjoy heavy razors and then again some do.
If you are looking for a safety razor with a mild profile yet want to get a longer handle then read the full review by clicking on the name of the model. There is also another safety razor that is considered to be an excellent option for a beginner wet shaver. This razor is called Edwin Jagger 89L (EJ89L), at the end of that review, I also summarize the key differences between EJ89L and 34C.
To summarize the key differences:
- Merkur 38C is heavier by 30 g / 1 oz and longer by 2 cm / 0.8″ compared to the 34C
- Merkur 23C weighs 17 g / 0.6 oz less and is longer by 2 cm / 0.8″ compared to the 34C
- 23C has a three-piece design which makes it little less user-friendly
- Both 34C and 38C have identical razor head design
- All three razors are mild and suitable for beginners.
- Because of the longer handles 38C and 23C are also suitable for leg and head shaving