Thanks to Martin Cowan:
“Further to the recent posts about remastered Dylan CDs, it's certainly true that if you rake through the racks at stores like HMV, it is possible to find "old" (ie not remastered) versions of albums nestling next to 2003 reissues, often at the same price.
“So … buyer beware!
“On a separate note, while the superior 1999 remastering of Street Legal has been rightly praised in many quarters - although why did they loop in that extra instrumental verse at the end of Changing of the Guards? - the echo on Dylan's vocal on some tracks (particularly Senor) is rather annoying.
“Compare that version with the remastered Biograph version which has no irritating echo and sounds just great and you'll maybe see what I mean.”