As of today (less than a week of becoming an iPhone-convert), I'm using Things, PocketMoney and iHappyDays Will be looking into other apps and games soon. I also agree that App Store should introduce subcategories. Apps are pouring in on a daily basis and Apple should look into something to manage and sort them accordingly for ease of searching, reviewing and purchasing apps.
__________________ David's Geeky Thoughts If I can't teach you by my examples, learn from my mistakes