202-258. That's my Legion era, right there. Damn, looking at all those covers brings back fond memories.
Yeah, I was a huge fan of the Cockrum and Grell issues in SUPERBOY/LEGION 197-224.
I stopped being a regular reader after Grell left the SUPERBOY/LEGION series though, and didn't steadily read again till Levitz and Giffen began their run (issues 285-306).
But there was some great art in the 225-284 issues, that I discovered later. Such as Jim Sherman, Mike Nasser, Joe Rubinstein and Bob McLeod.
And Jim Starlin (239, and 250-251).
Jim Janes (circa 265-280) also did some decent work.
Pat Broderick did art in issues 284-288 (2 stories each issue, 1 by Giffen, 1 by Broderick, in 285-288)
I was less into Joe Staton and Jack Abel (issues 243-249, and 252-261).