I was thinking that it must be faster to run the LiveCD from the harddrive than from CD?
Certainly, but it will still be slow.
I really do not want to use GRUB and definitely do not want to touch the MBR (THIS IS MY WORK LAPTOP TOO!!!).
Get a separate HDD and try it on your home PC. Using a USB drive is fine, and I know PCLOS is designed to be installed on one. However, you should try distros made to do that, because if not, chances are they will fail. GRUB can give you errors, and be obnoxious sometimes, but generally, it works well, and makes booting multiple OSes, especially Windows, easy. In fact, for booting Windows, most desktop dostros will automatically set it up for you.
Try other distros, and do it on something expendable. Ubuntu has popularity, but it's not the end-all-be-all of Linux desktop distros. PCLinuxOS, Zenwalk, Knoppix, Kanotix, Elive, Debian testing, Debian unstable, CentOS, Gentoo derivatives (note that I'm in the 'hate Gentoo' camp), OneBase, Lunar, SourceMage, Damn Small, Puppy (made for USB stick and non-invasive Windows partition installs, BTW), Yoper, Vector, Arch, Ark, SUSE, Fedora Core, SLAX, Frugalware, Foresight, Symphony OS, Freespire, Xandros, and more, all have their strong and weak points.
If you do not have a separate PC to use, then wait until you do. A PIII w/ 440 chipset or newer will be great (able to handle big desktop distros w/ 512MB or more, and even fast enough to compile the occasional application). One thing that is a must for trying Linux distros is a second PC with an internet connection. Just two days ago I screwed up w/ cfdisk and got myself unbootable. I managed to recover it, and now have Windows and Debian installed and updated (still restoring app preferences as I find them), and will get Source Mage done tonight (X, GTK, E17, and KDE, of course, will take all of tomorrow

). If I did not have access to Google on a separate PC, I would not be posting this right now in Windows, much less have gotten my data recovered and Windows 2000 installed on a big partition. The second PC having a CD burner in it is a plus, too.
I guess my willingness to try linux is coming to a quick end.
Too bad ... it looked pretty decent.
If you don't have a stack of 20+ CDRs of distros you didn't like, you haven't even touched what is available, much less scratched the surface

. FOSS is cool, but you've got to get used to it being a totally different thing than the monolith+clique cultures surrounding OS X and Windows. Don't give up, just give it more time and more discs.