Nice looking shots, KZ! I've been using Lightroom 4 for a few months now and am having fun with it. I usually shoot in Raw format and it is great for getting exposure and white balance just right. It's very much worth the price to me (it's occasionally on sale for around $~50).
I agree that spending 30 minutes on a single shot is way too much, unless you are selling the photo. My main problem is that I take too many photos, even with a daily photo blog and all the other sites that I share them on, and I end up with a hard drive full of unedited photos that I can't part with!