if the aerials are "refined" enough for you at this point, as far as reaching deep enough into recordings and extracting the heart of the music, the extra bass and throwing a better stage are not great reasons for upgrading. however, if you feel the midrange is "muddled" or indistinct, you may continue to feel disappointed in them. i upgraded from a 20K speaker to one costing 3X as much, and i got more bass than i needed (13Hz) and super-tweeters i couldn't hear, but i did get a good deal more clarity in the mid's, and better separation of instruments overall. but to be perfectly honest if i had never done the upgrade and still be listening to what i had (eggleston andra-2's) i would be none the wiser. although i would still be looking at maxx-2's (and all that jazz)- in fact i DID audition the maxx's when they came out thinking i could get the alexandria's for one-third the money. but then i heard the alexandrias and they were most definitely in another league altogether. satisfy your thirst and try to hear the alex-2's so you can say you heard "the best speaker in the world" according to wilson's ad's- oh that's right, they say that would be "pretentious. but seriously, go hear a super-speaker like that and "get it out of your system".
now i want to drive a ferrari 'cause my camry doesn't take the corners like i always wanted...