well, depends on your load! at work, we have millions of message per minute (our whole infrastructure is based on rabbitmq). rabbitmq can handle that load without any issues.
also, rabbitmq has an amazing admin interface, monitoring is really easy (most things you use for monitoring support it) and the whole thing has really sane defaults (imho).
all in all, it's one of my favorites pieces of software ever!
honestly, i always found quite easy to setup. do you remember your issue?
(btw, i remember people having problems with celery because of they way they imported the tasks. if you always do full imports (as in, from a.b.c import tasks instead of from . import tasks) you shouldn't have any issues).
