I'll save you some time.
In my experience,the general consensus for most peeps,especially on T-Nation,
is they get the best results or just as good with the original,good old fashioned Creatine Monohydrate powder,the German shit.
If it has the 'Creapure' logo on it,that's a good sign.
If it contains four different types of impressive-sounding creatine complexes,along with a whole bunch of questionable additives,and 'delivery systems',costs at least twice as all the other regular creatine powders and had a nice sexy shiny label,it's probably overpriced horse-shit.
Not to say it doesn't work,it just probably works just as well as the regular stuff.
Having said that,I have experimented with Creatine Monohydrate AND Creatine Ethyl Ester (CEE) for many years,swapping loyalty between the two,and I prefer CEE.
I don't necessarilly buy into the claims that it is better than mono,
or with some 'studies' claiming it is absorbed 30-50 times better than mono.
All I can tell you is what I have found, with ME-it digests a lot easier,I don't get cramps,I don't feel bloated,and I buy pills which are more convenient,I pop 3 in my mouth before a workout,and 3 after. I feel more pumped/focused,my muscles feel harder and look better for longer than with mono,and it's not much more expensive if you shop around.
I have heard extensive arguments from both camps,
but I have yet to see any conclusive studies that CEE DOESN'T work or works less as effectively than mono.
But yeah,if you're unsure or cash is an issue,stick with mono.