Default [Q] How can I transfer data

I finally bit the bullet and have a nexus 5 getting delivered Monday. Lg optimistic g is one of the better phones I've had. But my question is this:
What is the best way to backup and transfer my data to the new phone? Things like game saves and and app data for apps from the play store.
I know I can use titanium backup for the lg as I'm rooted but I'm not sure if I'm going to root the n5.
Thanks for the info and help.

Sent from my phone.
Phone: LG Nexus 5 32gb - Rooted
-Stock Rom -Franco Kernel -Recovered with TWRP

Tablet: Motorola Xoom - stock

Retired: HTC EVO 4G - Rooted and tweaked
LG Optimus G - Rooted