Hi manimal,
Retrodelay *may* meet your needs (free, too):
http://www.e-phonic.com/plugins/retrodelay.php Features (cut/paste from the web page):
# Independent left and right channel delay lines
# BPM synced or manual times (up to 6 seconds) <<<<<<<<<<<<<<<<
# Forwards or backwards delays
# X-feedback
# Ping-pong delays
# '1 feedback pass', there will always be 1 feedback
# Optional negative feedback for phaser/flanger effects
# Optional short delay times for phaser/flanger effects
# Integrated automatic limiter
# 2 BPM synced LFO's 1 modulates filter cutoff, the other the delay time (only available for forwards delay)
# 4 LFO modes, sine, triangle, ramp, envelope follower
# LFO, left/right channel inverse options
# 24dB/oct resonant filter placed in the feedback path <<<<<<<<<<<<<<<
# Switchable lowpass, bandpass, highpass, lowshelf and highshelf mode.
# Saturation
# Saturate and limit parameters
# 2 different types
# Old-school spring reverb
# Size, color and mix parameters
# Optional mono mode
# Fade out option, when using high feedback setings
# Fade out time parameter
# Pitchbend wheel, for smooth delay time changes
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I've only learned about this plugin recently, so haven't tested it extensively, but liked very much what I heard. It's one of the "Top 50" free or almost free plugins chosen recently by Computer Music Magazine for their recent Plugin Special Edition.
Good Luck!
Regards,
Dave Clark