#2 looks great to me, but I prefer tables under 65, personally. You will have a very large table on that stone, but the faceting looks very nice.
#1 may or may not be okay. Would need more pictures and ASETs would be nice on all. #3 is not clean enough. I wouldn't look at SI1 in an emerald cut. #4 is a maybe but need more images.
One bit of info you should always include when comparing stones is the diameter measurements. Size matters with emerald cuts because of their depth.
I also like the look of #2. Nice steps. I also like the ratio. It looks like its around 1.25. I like it better than long and skinny or more rectangle in shape.