I haven't tried Linspire 5.0 yet, but I gave 4.5 a whirl. It didn't seem that wonderful to me, though it certainly beat Fedora/Redhat with a stick.
Actually, my favorite distro these days is Mepis (
http://www.mepis.org/). Free download, it comes as a live CD which you can install to your hard drive, if desired. It comes with Samba working out of the box, and support for writing to NTFS partitions. It is fast and easy and based on Debian with a KDE desktop environment.
For a commercial, easy distro give Xandros a try. You can download the open circulation Bittorrent version for free. Vectorlinux works well with older hardware. I like KDE, so I use the 5.0 Soho version on my Pentium Pro 200 MHz with 128 MB of RAM, and while it is slow, it will run circles around Windows 2000 on that hardware. But if you install the XFce 4.3 version it is actually very snappy on old hardware. Mandrake & Suse are OK, but requires fast hardware. And frankly, I find them both at least as buggy as many of the smaller distros.