Totally different network. On the MX network ... yeah queued up for hours. Though there might have been some good material on that network ... you had to be lucky to get in 1st or anywhere near it. The Gnutella network has a larger user population ... more files ... easier to connect to files & multiple users ... & is even introducing Torrents soon.
Most gnutella programs are based off limewire's code in one way or another. Without the development of limewire which they offer the code to others for free ... well ... pro helps support this continual development. What's more ... you connect to more peers than LW basic or BearShare, etc. That helps you search for the rarer material.
Some people can get turbo connection with LW Basic (Free) also. But probably not as consistent as Pro.