I just went through the catalogs for fun... Schwinns in the mid-late 80's had pretty nice frames compared to their 70's models of the same name. Some of the middle ones had Tenax along with 27's (85 Super Le Tour, 86 Prelude). Even the lower frames had pretty good specs, with DB main triangles.
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."