technically (i've never smoked hash, so i wouldn't be able to ACTUALLY give you details on advantages/disadvantages, but i do have SOME knowledge) it would depend on the quality of the hash... and the weed, both have their grades, there are high grades and the low grades... although with hash, it's more about purity then anything else.... of the hash world, soapbar is the schwagg, while (i think atleast on this one point) bubblehash is the chronic... other then that, i have nothing really to offer.. i mean legally speaking, you're carrying way less weight, for the same high, but on the other side, it costs more for the same weight...