Originally posted by passacaglia:
an impulse file that is worth $1000 ?? oh my, i cannot imagine that being true. would be cheaper maybe to rent 2 good mics, a portable dat machine and fly to the destination they used to record the acoustic fingerprint [img]images/icons/smile.gif[/img] and make one yourself.
as far as acoustic mirror vs ren verb .... simply, ren verb is synthetic, although, you have more control with that than you would with an impulse file. but for the sake of realism, convolution is far better in most cases.