[Verizon Samsung Galaxy Note II] joshm.1219:
I have my two cents to put into it as a long time Beans user who switched to Trans Nebula for a DD. I have been flashing since the OG Droid and never had a ROM like Trans Nebula.

First off, it's built on the SCH-I605VRAMC3 base like Beans so group messaging, GPS, etc. all work flawlessly. It's in a Tab UI so you can open all of your apps in floating windows, which is basically as powerful as multitasking can get in Android. You can even open up apps in certain split configurations, with a 2, 3, or 4 app layout. A lot more powerful then the 2 app split screen on a phone UI.

He's even basically ported Halo to Touchwiz. He baked-in the xHalo Floating Window Xposed module, which when combined with Bubble Launcher, is a virtual Halo. Although one could argue floating windows is basically the same thing enabled for all apps.

Of course, he baked in DPI mods. He has the Density Changer app to adjust overall density. I have mine at 219dpi, because once you bump it up to 219 this 4-way icon appears in the nav/status bar that has an option to "zoom in for full screen" so that when you open an app up like normal it can zoom to a 320dpi phone ui while still having it open normally in whatever dpi you like for the app as a floating window. Obviously, he has Per App DPI Settings baked in to adjust individual apps. He also obviously baked in the MultiWindow Manager Xposed module to enable all or your choice of apps to appear in the multitasking menu, as well as added an option to pick the size of the window the apps are when opened.

Besides that, there's just so many details that make it amazing. You have full transparency control for the UI, in Aroma you can pick 0/25/50/75/100% transparency for the framework. It comes with all of the TBO Transparent Google apps baked in, which you can just update from the play store if you don't like the transparency. He has Google Wallet working even with a lockscreen shortcut on the stock lockscreen. They've done tons of nice theming to get the messaging and contacts apps transparent too. You can pick between AOSP, stock, and transparent messaging as well as AOSP, stock (transparent), or tablet contacts in Aroma as well if you don't want transparency.

He baked in every other Xposed module you can think of, Greenify, xQuickToggles, Icon Themer, NFC Control, XBlast Tools (to adjust colors of Wifi/Signal bars, etc.). He baked in DSP Manager, PIE, Trickster, Hidden Options, Fast Dormancy, Fast GPS fix, Spen Keyboard Switcher, etc. He has CRT animation in there, all of the same clock and status bar mods in the newest Beans build. In his next build he's even adding a themer in Aroma to choose what colors you want the whole UI themed at. He even ported the conditional wallpapers for charging, the Xperia Z & S launchers, has options like Walkman & Apollo for music, etc.

Just so much more powerful than anything else available for our phone. Plus it's completely and absolutely stable. Can't beat it in my opinion.

EDIT: Oh and it has the coolest boot animation ever. It's a sped-up video from the Hubble of a solar flare, and as the flare dies "Trans-Nebula" fades in then it opens to your lockscreen. So sick lol.