Best Option - All In One Recorder

I am looking for the best ‘all in one’ option for a DVD recorder. My main criteria are as high quality as possible and long record time. I have a number of videos (on Beta format!) that are typically 3-4 hours in length.

Is a dual layer all in one by best/only option? I don’t beleive anyone is selling a Blu Ray recorder in the U.S… so I am assuming some kind of DVD-R DL or DVD+R DL recorder is my best option…?

Again, I’m seeking longer recording time at higher quality than is available on a standard 4.7 single side disc.

Thanks in advance for any thoughts or help!