Crusading Footpad in the Quintessential Rogue. They get a +2 divine bonus to all saves, +2 reflex, and a divine companion at first level (treat as familiar). They get sneak attack undead at second and every other level i believe, along with a detect evil(like a paladin). the sneak attack undead is ONLY that amount of damage, and i dont believe it stacks with other sneak attacks...so youd have one amount for non undead, another for undead.
I played one of these for all of two levels before being killed and the game ending. Just recall one thing. With a weasel companion, I went from a +13 reflex save to a +19 reflex save in one level. +2 +2 +2. Add that to my rogue levels and evasion....who needs improved evasion? I never failed a save. the wizard dropped fireballs on me intentionally.
I did it as a CG worshipper of Olidammara in a Greyhawk campaign. Went from CN to CG over the course of the campaign, became a cleric, then went CF