So I've been on Slim bean for a almost a day now and I alrdy like it more then baked black bean..and I can prolly say also more then touched by SG4 altho SG4 is not a AOSP like the others..
I noticed slim is much quicker and naturally optimized compared to baked.. at first I thought I would miss the tweaks you can turn off and on in baked black bean ( like 3g speed uncap, buffer increase, turn off log-cat etc..) but it seems slim bean might have those already applied as I am getting the most consistant and highest ratings on speedtest.. Also antutu scores slim beans about 1000 points higher then baked black bean with a completely untouched ROM.
One thing I noticed about slim bean is that he uses the Nova launcher which my only beef with that is you can not create a folder on your desktop to group apps without buying the premium version of Nova, with baked black bean you can create the folders without a purchase as it uses a different launcher. minor difference but still noticeable for me.
all in all, I think the battery life out of the 3 roms previously mentioned so far would be best on Slim bean.. I have yet to tether with Slim but I am guessing that because of my higher constant speedtest scores that it will most likely be one of , if not , the best in that category.
I use juice defender which cuts off 3g when the phones screen is off and restores it when it is unlocked ( it is great to help save battery life). With bake black bean , it would take almost 1-2 minutes to restore 3g data connection as slim bean only takes about 10-30 seconds. One flaw I seem to have found that happened in both baked black bean and slim is that with juice defender active the GPS would not lock that great and would always be looking for satellites, making the navigation impossible. As soon as I turned off juice defender, my GPS locked right up and navigation was fine.. I figured this out while on Slim but I assume it would be the same deal with bake black bean since being both AOSP roms, they are very similar other then tweaks and launchers really.
Looks like I will be sticking with Slim bean for now, thanks for your input Doc