Re: Open Comb or Slant
From my experience of both:
Merkur 39c slanthammer: A good razor (though not my favourite) which I've never found aggressive, contrary to all the silly scare stories you read about slants. Nor have I had any problems with blade alignment.
Muhle R41oc: From what I can remember, this razor gave me a close shave, but it did feel a tad aggressive. I had problems with blade alignment, so I sent mine back. However, bear in mind that there are users who have nothing but praise for this razor. (Note: The open comb head on the R41 is made by Merkur)
The only way to find out which is best for you, is (as you probably know) to try them both. I'll be more than happy to lend you my Merkur 39c so you can judge for yourself, although it is heavier than the standard slant.