[CentOS] 5-beta or 4.4 for a new user?

Mon Jan 8 20:55:02 UTC 2007
Patrick Useldinger <pu.news.001 at gmail.com>

Hello,

I am a Slackware user who's interested in learning CentOS. At this point 
  it is for intellectual curiosity only and not for any real work so the 
machine need not be 100% stable at this point. It's most probably going 
to be an installation into VMWare.

Given that, I thought I'd wait for 5-beta (mid-Jan'07) and start with that.

Will it be possible to upgrade from 5-beta to 5.0?
Or would you advise me to start with 4.4?

Regards,
Patrick