i am sad i cannot try either of them and paying just to try them out does not smile to me, too much money will be wasted since reselling is always a loss.
since it seems people cannot agree here what would be interesting to do:
you get three users (Eke and two more) to spin a few popular recordings listening with ASG2 and SD3.
then each of them must not tell the others how he felt but they go home and put their impressions on paper.
third, when describing them (IEMs) the listeners should try to describe actually how particular composition sounded rather than talking about amounts of bass and else. basically that would mean talking about deepness of guitar riffs, energy and punch depth of drums, richness of honky tonky piano, full mellowness of violins etc etc..........
then we will know for sure.
so far there are only two reviews each with different musical material... from my experience there might be music my V1 would do better and then H200 would do better another type of music... the only one i heard which does it all is 1+2... i cannot say which one is better because budget and listen preferences would determine that. for me 1+2 easily beats them all but i met James444 and listened to his K3003 and i could see why for him K3003 was his choice. there are too many nuances to go with bold conclusions.
but if you want critical comparison this would be best working in the way i desribed.. and remember, describe only music and instruments and voices... not bass or trebles per se....
let me give one example. right now i listen to B.B.King with RDB+v1 C3 and BH and i can only say it again, wonders how acoustic sounds on this rig... then i did the same with H200 yesterday and loved it too while i find H200 to be more universal ... but i would pick V1 for acoustic at all times... still when it comes to rock and else i find H200 to be more full sounding and forgiving. this is so bad now that i scratch my head thinking about which of them will have to go. i put the add for V1 but might take it away ...
what i mean? it can happen both ASG2 and SD3 will fit many users but it will always depend what music and how you listen. so easiest way do this comparison is like i told.
it was once done similar way (like i described) for DACs in UK, i read results from that comparison and it helped me a lot when i was looking for DAC. i think Keith from Purite Audio organised that DAC audition.
since i understand many headfiers in America it would be easier to do it this way.