For any collector of music,a majority of CD reissues are faithful(or can even enhance)the original production. Alas, with Tres Hombres (in my opinion ZZ Top's finest album, and a rock classic to boot), the drums have been remixed with something similar totheir 80's offerings. (Which are fine by the way, but do not belong here) It has ruined the sound and overlooked some of the excellent musicianship on the original recordings. The same applies to the album `Tejas' I would ignore this issue till Warner Bros decide to reissue early ZZ Top with respectful and decent remastering, such as that shown in the `Chrome, Smoke and BBQ' boxset and `Rancho Texicano' (Very Best Of), where Engineer and remastering expert Bob Ludwig has done a faithful and exceptional job. As for now, those with fond memories of ZZ Top on the vinyl versions, will be in for a nasty shock.