I posted this a while back in the All Things Mods! thread by @ajnycguy, but here it is again for those who would like it-I am using the keyboard from the LG G2, ripped and provided by @Droidviews, and I must say it is probably the best keyboard I have used on this phone. The keyboard can be themed as well, I am using Evo and really like the way it looks. Plus, the keyboard offers a separate number row, which is nice; to make it work, you will need to add the following line to your build.prop:
ime_extend_row_keyboard=true
Just add it at the end of the build.prop (I used ROM Toolbox Pro) and add a blank line afterwards, save changes, then reboot.
Keyboard download link:
Install LG G2 Stock Keyboard + Themes on Your Android Phone