Since you asked...the Merkur is a very nice razor, but at this point, you'd be better served by using your VDH razor and working on technique. You've already spent $500. We're trying to help you get good shaves and not spend any more money.
Several guys have encouraged you to do a 30-day focus, as many of us have started out just like you. Before I started this wet shaving thing, I used Norelco electrics for 30 years. My shaves were fast and crummy, but bloodless. I couldn't shave with a blade to save my life...or so I thought. I decided to give wet shaving a try when I looked at my face in a 10X mirror right after an electric shave. I couldn't believe all the stubble and irritation I saw. I knew there had to be a better way.
It took me 3 to 6 months before I felt somewhat proficient with wet shaving. Expecting instant progress can be frustrating. Take your time, and enjoy the process of learning how to get consistently good shaves. I've been wet shaving for 4 years now. Although I have good technique, I still consider myself a learner. Most of the folks giving you advice could get a great shave with pretty much any setup because they've worked to develop solid technique.
You'll have plenty of time down the road to buy more stuff if wet shaving becomes your thing. Save your money, use what ya got now, and work on technique. This is just my humble opinion. Do what you need to do. It's your shave.

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