It all depends on the speed of your connection. If yo have dial-up or another slow connection there is most likely no difference.

If you have a fast connection there should be a difference, but not everyone seems to notice it, so I don't reaaly know what to say.

I have a 1 Mbit connection and I see a big improvement while using PRO

Also it is very cheap to buy. Only 18.88 from official site. Remember to get it from official site or you will most likely be scammed.

www.limewire.com

Hope this answered your question You can also use the search button to look for more info if still in doubt.