You know....I was just about to buy the XPL script then read this thread...I should have known something was up when I didn't see much change in their site info. I can't count how many scripts I've looked into over the past year. Right now I am using infowizards, but to be honest, I am not a fan of it. I thought about the Gossamer Threads one, but they still can't convince me why they need to charge so much.
As for the WSNlinks posted here....I have not seen any adult link directories or LL's with this, nor mainstream sites. However, after reading it through, I have to say it does a shite load of stuff and for the price, it makes me wonder why they only charge $60 for it.
It's become very hard for peeps to find a good quality script but one with good support and track record. As it has been said before, changing scripts in the middle of business and already having your category pages indexed will create such a huge nightmare and job to change over. Lots of 404's happening
I wish I had the time to make my own actually....to be honest, if I thought I could make one and sell it, I'd would do it. I already know what I would do with it and know other webmasters would use it too.