If you want something slightly more efficient and very smooth, the GC .84 will do the trick and if you want more efficiency, than pick either a Lupo .72 or .95.
The Progress is also a very nice razor and it's adjustability can help you find your perfect setting after a couple of shaves.
The Rockwell isn't a bad razor, but it's very mild for my taste and I wouldn't recommend it unless high efficiency isn't what you are looking for and you want something very mild and comfortable.
I haven't owned a AS-D2, but it is well regarded as one of the mildest modern DE on the market and because of that not many people like it.
The Progress is also a very nice razor and it's adjustability can help you find your perfect setting after a couple of shaves.
The Rockwell isn't a bad razor, but it's very mild for my taste and I wouldn't recommend it unless high efficiency isn't what you are looking for and you want something very mild and comfortable.
I haven't owned a AS-D2, but it is well regarded as one of the mildest modern DE on the market and because of that not many people like it.