Due to a request, I am releasing my new, self-constructed delay (echo) plugin. Anyone who owns Reaktor can load and use this plugin in their DAW. Get it here and use it if you want.
http://iceages.info/stuff/IceAges-ReaktorDelay.ens
The reason why I constructed my own echo plugin is because all the others only have a linear decrease in the echoes with constant attenuation, while the decrease curve for my plugin can be changed, as well as the decrease in the high and low frequencies after each repetition. It is also possible to make the input signal mono and only keep the resulting stereo effect of the echoes.
If anything is unclear, just ask in the comments section.