The sports springs and valving are firmer, so there isn't much overlap between the two kits. If you are exclusively driving on the street, I would say the Comfort Adjustable kit is a no brainer. If you go to the track a few times a year or have some great roads near your house, then maybe the versatility of the Sports kit is for you! Both ride better than stock, but the Comfort Adjustable kit can be adjusted much softer.
Based on MPP's reply (Sasha) to silverflash, I'm leaning heavily towards the adjustable comfort set-up. With no track available, roads here on Oahu suck, and my want to lower the stock look of my car, this looks like the way to go.
I thought about doing sway bars as the first suspension mod, but I'll take the plunge by years end and will post before and after pictures of my ride and install.