Mammut Neon Gear 45 is a great little cragging pack. It has gear loops inside and pockets for your shoes, chalk bag, or misc. stuff. The back panel and the lid open so it's easy to access everything. $85 plus shipping. 

Trango Pack opens from the lid but also has front zipper for easy access, new versions don't have this front access zipper. The big elastic side pockets are nice for carrying a water bottle and guide book while hiking and for airing out your shoes, etc. The only other zippered pocket is the lid. It's a more basic pack than the Mammut but it's much bigger. Fits a rope, trad rack, helmet, and all other gear nicely inside and has cinch straps so it's easy to put a stick clip on the outside. $75 plus shipping

It's funny both of these say they are 45 Liter packs but the Trango is much bigger.