Warlock vs. Incorporeals

[IanB]

You don't want sudden maximize, you want maximize spell-like ability. At least, that's what I'd go for.

 

[Glyfair]

Also good news: the UMD needed for wands. After getting into auto-success range I can ditch UMD and bone up on knowledges and social skills.

Assuming you only want to use UMD for wands. At higher levels I'd assume you want to be able to use higher level scrolls, staffs, and some other magic items that you could use UMD for.