Hmmm an all-original line-up or one missing its key, totally irreplaceable ingredient...? Nothing in the Dead realm will ever come close to what was possible with Jerry around, obviously. With Phish, it would be all the original guys and the possibility of real magic imho. Other Ones '98 and Phish fall '98 were both pretty much the end of my touring days, so its been 10 years for either camp, but I've seen PLF&RD a few times... I'd say definitely Phish, if I was to hit either, but only if I get reliable reports that they're playing lots of oldschool stuff and ripping it hard.
"There, in huge black letters, was 'The Grateful Dead'. It just... cancelled my mind out."-Garcia