@Craig
and i didn't want to do a side by side install as i am not crazy about dual booting
I have 2 drives in both my laptops, one drive dual boots XP and LMDE the other dual boots windos 7 and another LMDE. In addition I have an esata/usb hub I just drop 80GB drives into to test other distros out. Similar to this
http://www.cclonline.com/product/27400/HD-HDOCK06/External-HDD-Enclosure/3-5-amp-2-5-Hard-Drive-Docking-Station/HDD3320/, esata is great if you have a desktop.
I have windows for video software reasons but also for macrium reflect image backup, it's free and the best I have found the last 5/6 years and I've been through acronis, r-drive etc, macrium has the simplest gui and outperforms them all. Best of all you set up a profile the first time, put a shortcut on the desktop so that one click and it's off, no interaction needed, great for beginers.
I install XP in a 30GB partition first, then Linux in a 20GB partition and then format the rest of the drive NTFS for my data.
The most popular videoI have made is installing LMDE as a guest in virtualbox on an XP host.
The pst for the videos are well buried in the forum but folk still find them, yesterday there was a surge in downloads that must have been due to this thread and folk seeing my sig.

The other popular video is of the Firefox multi tabbed Speed Dial addon, all the other browsers speed dials are only one page.
http://lin.me.uk/pics/speed-dial.png which gives me nearly a thousand very visual links
The reason I got into this debate about levels was that I'm about to produce some more videos, I can now capture the video output from one machine and record it, high def on the other so I really want to get things right, no bad advice, just the best working practices.
I will host them on my own server until I'm satisfied with them and then youtube them.
I've found that the younger generation nowadays go on youtube to find out how to do things and it's the kids and newcomers I'm aiming at.
Later Edit
My thoughts that level 4-5 updates will be promoted to level 1-3 once they have been shown to be reliable seems to be confirmed with this post by dawgdoc on the breakages thread.
I just checked my update history and it was udev/167-1 instead of 167-2 that was also Level 3. But further back udev/166-1 was a Level 5.
So I restate
Do not use levels 4-5, do not use Synaptic and do not do a "sudo apt-get upgrade" or a "sudo apt-get dist-upgrade"
and you will have a very stable, quick and reliable machine.