Don't you find you get spam to too many different names with a catchall? I discontinued using these a few years ago because it seemed impossible to catch the spam anymore because stuff would get sent to anything and everything at a given domain, and with the catchall, it ALL becomes a valid address. It's just as much of a pain to blackhole all those possibilities as it is to set up aliases for all the addresses you actually want to use.

Honestly, I've been using fewer addresses, not more, and the spam filtering is doing well enough for me. One work address, one main personal address in gmail and even with a couple of really long-time domain addresses forwarded to the gmail the vast majority of the spam goes right into the spam mailbox and I get very few false positives. Same at work now, very rare single spam into my inbox, no false positives. I'm happy enough with that that I don't spend any time trying to blackhole stuff or create multiple aliases or temporary accounts or such.