Ike Behar certainly isn't "the best," but I think they're nothing to raise a nostril at, either. It's a fine RTW shirt, especially at the Marshall's/TJMaxx discount. I own two, one purchased at $25 the other at $16. That's value for the money. Behar ties, by the way, are also an excellent value for ~$16 at Marshall's/TJMaxx.
I picked up quite a few Behar shirts and ties this week at Nordstrom Rach for $9.99 each. I was very please at the bang for the buck.