Reddit reviews X-Men: Excalibur Classic, Vol. 1 - The Sword is Drawn (v. 1)
We found 2 Reddit comments about X-Men: Excalibur Classic, Vol. 1 - The Sword is Drawn (v. 1). Here are the top ones, ranked by their Reddit score.
Used Book in Good Condition
Nightcrawler is tougher, as he doesn't have a lot of stories where he is the spotlight. The few good Nightcrawler stories aren't well collected, but here's what I'd recommend for good, classic Nightcrawler issues:
X-Men Vignettes, Uncanny X-Men Annual #4, and Excalibur.
I have always really enjoyed the original New Mutants series
http://www.amazon.com/X-Men-New-Mutants-Classic-Vol/dp/0785121943/ref=sr_1_6?ie=UTF8&qid=1407602936&sr=8-6&keywords=new+mutants+classics
And the Excalibur classics
http://www.amazon.com/X-Men-Excalibur-Classic-Sword-Drawn/dp/0785118888/ref=sr_1_5?ie=UTF8&qid=1407602993&sr=8-5&keywords=excalibur+classics
They are not "required" reading. But I would recommend them :)