I can't comment on bugless beast, but smoked glass feels very fast.
Bateleur, have you tried minfreemanager? It lets you tweak how android manages memory. Between this and automatic task killer, I rarely manually kill a task.
What are you using currently?
Is there still consensus that Cyanogen Mod is where it is at? Or, have some of the other mods caught up and made some major strides?
I spoke with the developer of Titanium Backup and now have working backups for all my data, so I'm ready to make the switch. I'd do it with what I had planned last time, Simply Stunning 2.0.1 (android 2.1, ESE53), but that is now out of date and quite a few ROMs have updated since then, not to mention Cyanogen Mod is gaining quite a few supporters as time marches on.
And
this theme is almost done! I cannot wait, as soon as it's available I am giving it a spin and determining if I like it in hands-on use as much as I like it in screen shots. The minimalism approach is just beautiful.
He mentioned working on other trim colors in the future. As much as blue gets overused at times, I love a minimal amount of blue trim as opposed to green/yellow.