This is my first exposure to Vector, so I can't compare 6RC4 to any earlier version. I installed it on my Intel Mac mini as a virtual machine in VirtualBox. This probably insulates me from some of the issues people are having with wireless, but on the other hand, I haven't seen any reports in this thread on installations on a virtual machine.
The result was pretty good, especially given my lack of exposure to Vector and the fact that my experience up until now has been mostly with the "major" distros (Ubuntu, Debian, openSUSE and a bit with Mandriva), all except the latter with Gnome. I went with the new graphical installer, and instructions were pretty straightforward except for the partitioning part. I was surprised to find no automatic partitioning option, though fortunately I have had enough experience with gparted to make a good guess as to what I needed. I went with two partitions, one ext3 with / as mountpoint and one swap partition. The rest of the installation was pretty routine and before long I was booting into the new distro on my HD.
My connection to my home router is through AirPort wireless on the mini, but both VirtualBox and VMware Fusion mimic a wired connection on virtual machines. The big test with any vm is whether the tools package will install properly and give full functionality, including mousing to and from vm without a special release key, resizing vm window on the fly and folder sharing. Happily, VirtualBox tools installed without incident and all of the tools worked. (VMware tools are more of a challenge, so I installed on VirtualBox to increase my chances of success.)
Other than the lack of an automatic partition option, my only complaint was weird fuzzy graphics on the Terminal right after installation. Fortunately it went away after a reboot.
The next challenge for me was installing software since VL only gives you the basic stuff. I used gslapt to install openOffice, Evolution and Rhythmbox, in part because I wanted to see what software was available in the repository. Both installed without incident. Unfortunately, Rhythmbox didn't come with the codecs to play AAC (mp4) music files like those in my iTunes and the app didn't offer to get them, but I was pretty certain that what was missing were gstreamer bad and ugly, and they were available through gslapt. However, the helper application that gets the album art and works to connect Jamendo are still missing, and I don't know what they are called.
I use statistical applications in my work, so I always install "R" and the GUI for R called rkward. I wasn't surprised that rkward was missing from the repository, but I was that R wasn't present either. My next test for Vector will be to get the source code for these and try out the graphical compiler tool.
All in all, a pretty good experience for a relative beginner in Linux. And lest I forget, the Desktop - look and feel is very nice; a real work of art!