The first book seemed to mostly be an exercise in demonstrating that anything that can happen, does happen- a novel idea that is somewhat lacking as a novel. The second book was better for me in terms of story where each chapter was almost it's own segment. The biggest flaw I think is a real lack of character development and it's pretty much required that you be familiar with the characters from Illuminatis to get any kind of connection there.
Illumanatis could be a good read on it's own, but I guess for the rest of Wilson's stuff you have to appreciate his style, and it appeals to a narrower audience.
Twice I've managed to get distracted away from going further than the first chapter of Pynchon's Crying of Lot 49. Oh, well. maybe someday. Gravity's Rainbow sounds promising.
The overall concept of it still interests me and as I say I may return to it one of these days when the pile of books I still have to get through thins slightly. Maybe I just wasn't in the correct mindset at the time to completely give into what I was reading or maybe it's just not something that speaks to me. I guess we'll see next time I decide to pick it up.
It's funny you should mention The Crying of Lot 49, that was the very same book that put me off him as an author for the longest time as well. I just can't get through it, even with the length on my side I just find it impossible to read on a chapter or two into it. I do own a copy of Gravity's Rainbow, I'll definitely get around to reading it one of these days. But it definitely won't be too soon after I finish this one.