My first DE was the Merkur 23c, which is a long handled version of the 33c.
I had two small complaints with the 23, only one of which applies to the 33. Firstly, the handle was a little too long, rendering the entire razor a bit unwieldy. Secondly, it was a little too light for my liking. The 33 will presumably be even lighter, although perhaps the lack of weight will be made up for in manoeuvrability.
I have quite a light beard, but I nonetheless favour heavier razors than the 23, as they seem to offer more consistency of pressure and better feedback on angle.
As far as the blade goes, well, I love an Astra in my black handle SS (as per my sig), but I still haven't quite settled on my favourite blade for the 23c. The lighter Merkurs appear to offer a pretty consistent shave irrespective of the blade you put in them, largely because they are so mild. I suppose it depends on your beard and skin, your technique and the razor you use.
Sorry, that wasn't particularly helpful!