AEG's MERCENARIES book does the ranger justice in several core classes: Guerilla (stealth fighter), Hunter (bounty hunter or survivalist), Mercenary Ranger and Scout (ranged sneak attack!). They are all good and all focused on different areas. I played an AEG mercenary ranger last week (first time I EVER played a ranger of any type for the first time) and the class kicked ass. Definitely plenty of reasons to go up in it past level 1. You can recreate the PHB style ranger with it as well (entirely at player's option), or do pretty much whatever you think a ranger should be able to do with it. It's that flexible!