You're kidding...
I just picked up a pair of IL30s off Craigslist a couple days ago! In fact I have them hooked up to my main system, right now listening to TOOL. I got a smoking deal on them because 1) the owner greatly undervalued them, and 2) one of the tweeters weren't playing. So I offered 10 bucks and he took it. I got them home and found a loose jumper on the back. They both work flawlessly! Anyway I've been bragging about them for the last couple of days now and am quite enamored with them. Very nice, very balanced, neutral speakers.
That's funny. Hey tho, I'm pretty impressed with them. I'd love to check out the IL40s. I believe that specific model was one of Floyd Toole's favorite speakers in the price range. Anyhoo... at least now I know you have a high bar and am very familiar with your speakers I'm gonna open up by saying if you want something noticeably better you're gonna need a pretty healthy budget for 5.0.