Thanks for the vote of confidence. For the price, I'd expect the AR DIY's to be vastly superior to the Titans, they're almost twice as much.
I haven't really got the comparison's I expected, but to be honest it probably wasn't a reasonable question. Most people who would own or test the Titans out are probably trying to fit a budget (as I was in university) and wouldn't splurge for the DIY's. I don't know anybody who has the DIY's and have never heard a set, so I would be relying soley on internet testatments and comparisons with speakers I have owned to convince me to try them.
Jim Clark is right, if I put the Titans by my Studio 20's or even Mini Monitors, they do sound flat and lifeless. That being said at 100 bucks a speaker I've only seen a few brands that could keep up. They're great for entry level systems and are suitable apartment/bedroom/dining room/HT speakers, critical stereo listening will reveal their limitations.
I guess I was really hoping someone would say, "don't worry about not being able to afford new Studio 20's, the AR DIY's are just as good or better".
Haven't got that yet, but I ordered a kit...so maybe in a few weeks I'll answer my own question. Now if you'll excuse, me I have to go find my soldering gun and blow the dust off it.