I thought I'd give a quick update for those interested.
The bike I wanted came back up for sale and I snatched it. 1994 ATK 605.
I love it! It rides a lot more like my CR480 (suspension wise) except for the extra 90 lbs.
That is great because of all the bikes I have ridden I like the 480 the best. The XT rode like a caddy with a geo metro engine.
The only thing I would like is another gear(sixth). It has enough power to just tack one on top of fifth. I dropped the rear sprocket to a 44 tooth (it had a 48 tooth) and it still tops out around 90. Comfortable cruising is about 60. I'd like to bump the cruising speed up to about 75 w/o loosing the bottom-hence the desire for a sixth gear. Oh well, wishful thinking. Anyway, sold the XT for 700 to my friend, but if he changes his mind (he has been out of town and hasn't "taken delivery" yet) I have 2 or 3 people in line.