Most of the max objects are now commercial and not freeware anymore… at least when it comes to reverbs…. Tap in tap out is nice but a bit limited, was looking for something a little more complex were you can introduce values of space, feedback, filters…
well tapout is simply not fast enough, as you need delaytimes in the microsecond range
to make a good verb. but there are objects like comb, allpass, or teeth, and they will do
everything you need.
in theory it is not difficult to make a good verb, but if you biuld one from thousands of
allpases you will run out of CPU sooner or later.
for a classic verb, i´d use a commercial vvst plug-in, when it comes to maxmsp, i would
prefer create some weird new effect reverb and not the usual room simulation.
go right ahead and use the [yafr] or [yafr2] abstractions- the first explains it how to use itself while the other is a bit more complex, but once you understand the concept is a good tool :) hope that helps :)