I have used MecGar magazines in 1911's (9mm, 40 S&W and 45 ACP), and Para Ordnance wide bodies (9mm, 40 S&W & 45ACP). All functiioned reliably the only problems were with those designed for the PO would not hold the slide back after firing the last round.
Recently I have switched to Metalform magazines for my 1911's in all three calibers. CDNN was selling them at bargain prices and they function relaibly in my Dan Wesson PM-9 (9mm), STI Trojan (40S&W) and several 1911's in 45ACP.