I like managing my AUR packages with pacman for some reason. I actually find it to be less trouble than dealing with yaourt.
I've looked into this for a brief moment but realized that I want to spend as little time in the GUI being unproductive as possible. I'd almost say that shitty X fonts are a feature for me right now -- the one time it was an actual problem motivated me to set up CUPS and get my laser printer working (btw, HP, f* you for your handling of Zjstream printers).
Good tip though. And yes, the patent issue doesn't help.
I guess this has something to do with patent issues, but I'm not sure. Although being a bit of a hack, you can get the Ubuntu font rendering with patched libraries from AUR (1). For me the Ubuntu font patches provide in every way very pleasant rendering. If you want to spend time fine tuning and even better rendering, you might want to try Infinality patches and configuration (2).
Use yaourt (3) instead of pacman for keeping the system up to date, and it takes care of the AUR packages also. Installing yaourt is the most annoying part here, but after that it's pretty straightforward.
1. https://wiki.archlinux.org/index.php/Font_Configuration#Ubun...
2. https://wiki.archlinux.org/index.php/Font_Configuration#Infi...
3. https://wiki.archlinux.org/index.php/yaourt