hi I recently bought the 25c model of merkur (with the open comb) . as a starter of wet shaving (and as a guy with gentle skin and not much of beard) I felt it is very agressive to my face . another thing , I noticed that the teeth of the comb are "in the way of the blade" and it leave some beard hair . I read a little bit and I decided to buy closed saftey razor . there are 2 models I'm thinkg about : 1) Merkur 34C Heavy Duty Safety Razor 2) Merkur 33C Classic Safety Razor what's the different between those two , are the both closed the same ?