I've been using MIUI since the beginning. Lately it seems that it is getting really bloated.
It has been lagging worse with the last couple of releases and I have been having issues with running out of memory.
Each install I have done full wipes and clean installs.
I just installed the latest CM7. It is running much faster/smoother and with the same apps installed I have 37mb free.
I think it is just getting to be too bloated for the original Droid.
Oh well. Upgrade in Aug and hopefully the Bionic (or whatever it will be) will be ready.