Many people have different oppinions on weather to upgrade to Pro or not....
Pro doesn't always mean faster downloads, that depends on your internet service....
Pro will however connect you to more hosts 10 is the number I think for Pro, were as its 8 for Basic....
Pro will give you better search results...
Pro gives you 6 months of free upgrades....
So they are some of the advantages of Pro, the choice is yours, if your not happy with the Basic version upgrade....
Hope this helps with your decision...