Some things I noticed with the new ROM 1.6. It runs a lot smoother - I always have over 200MB RAM free. I have 216 MB free currently verses 80-100 on the last ROM. I have the same stuff loaded I did before.
There's no delay getting to texts and emails. It shows up almost instantly. There's like a load time of 0.000004 seconds :/
From the phone being locked I can drag the messages icon to the ring and that takes .04 seconds to load. Still faster than unlocking and then clicking on the messages icon tho.
If you don't know what I'm talking about then you never saw sense 3.0

it's pretty neat.
Again I'm using Nil's gingersense ROM 3.0 version 1.6.
[ROM] Nils' Business GingerSense 3.0 (8/11/11 V1.6) - xda-developers