Hello Trevor,
I have not tried Ubuntu for some years so all I can do is applaud the features of Mint 8!! Like you, I am no Linux expert and usually have great difficulty and frustration configuring anything special but not, as I said, with 8
Have a look
here to see what's on offer. Can't you install 8 alongside Ubuntu or perhaps your HD is too small? I have been using Mint 6 for some time now, tried 7 but it didn't offer any great improvement so to play safe I installed 8 alongside 6. My desktop HD is only 20GB and it works well. There's even an option to import bookmarks and some email data from the older version during install and of course there is the option to partition your drive accordingly for both versions.
If you do install, download the Main Edition ISO and burn onto a CD. Boot up from that and you can run off the CD initially to try it and then install. There is an OEM version that I was advised to avoid but not sure why!!
Give it a try, you wont regret it
Andrew
sí, tenemos no hay platanos