taz,
Your points are well taken. Lots of good thoughts and comments too.
I have a few comments on my original post and your reply:
1) Using other drives instead of DVD burner:
The MTBF is an ideal number and should be combined with the duty cycle percentage.
Even taking that into account, I fully agree with you that it should burn thousands of CD-Rs. In fact many people report using CD burners for 1,000 and more burns without a problem.
However, the tray opening and closing and motor being in use and other moving parts being used all put wear and tear on the drive and could potentially cause premature failure, if one is unlucky.
I prefer to play it safe by using my cheaper/faster drives for some tasks:
Maybe I am being overly cautious and/or paranoid
, but considering that I already own the needed CD-RW and DVD-ROM drives which are so cheap (and numerous) and are faster for burning (52X) and reading (where DVD-ROM drives are concerned), I will continue to do it this way.
With respect to the hard drive analogy, I feel that with a hard drive, you don't have a cheaper alternative that is just as fast at accessing the data.
With CD-RW and DVD-ROM drives you actually have faster alternatives.
BUT, I DO get your point!!
2) Regarding the DVD specs, you may well be right about the characteristics etc. having a lot to do with delays.
Wow, was it 6 - 9 months for 4X media? I am NOT being sarcastic, I just didn't keep close tabs on how long it took.
Well, only time will tell how long it actually ends up taking for 8X media to appear.
I did buy the drive knowing full well that it might be a while for 8X media to come out and for its price to become reasonable. Besides, I have 4X +R media that will last a month or two, thanks to recent Hot Deals, and media should continue to become cheaper - I read the profit margins somewhere, and they were pretty high, especially compared to other media such as CD-Rs...
In the meantime using an 8X burner at 4X won't be that bad

(I started out at 1X in March 2002), and the 8X Plexy is $265 shipped, which is pretty reasonable compared to the popular DRU-510A burner, although prices are dropping daily.
Thanks for the comments, I am glad you took time to respond, that is why I like this site. There are a lot of interesting viewpoints and there is a lot of solid knowledge here that some other sites are lacking in...