yeah i have heard that about the eagles but he was already thinking eagle, so.....40 is not an easy caliber to shoot and i know some of the full frame eagles have feeding problems. if your on a budget s&w m&p series, springfield xd, or i hate to say it a glock. i think the glocks have unsupported chambers though and are subject to Ka-booms.
i enjoyed my ruger .40 (another good option if you're on a budget btw), and had no problems shooting 4" groups with the beretta cougar .40.
the H&K p30
is a GREAT 9mm if you don't want a .40 though.