Best Albums to Get...

OOP I'm assuming

Yes. Megaforce records (in the states) have every studio record with Joey Belladonna in print or recent enough that they are available. The rest of the studio records were with another company and there is probably a lot less demand for those to warrant a reprint.

However, Amazon (and probably iTunes) sells MP3 downloads of them cheap enough.

[ame=http://www.amazon.com/Sound-White-Noise-Expanded-Edition/dp/B0018C2W7S/]Sound of White Noise - Expanded Edition[/ame], $9.99.

[ame=http://www.amazon.com/Stomp-442-Expanded-Edition/dp/B0018C1PLC/]Stomp 442 - Expanded Edition[/ame], $9.49.

[ame=http://www.amazon.com/Volume-The-Threat-Is-Real/dp/B001TGIC9U/]Volume 8 - The Threat Is Real[/ame], $5.99.

[ame=http://www.amazon.com/Weve-Come-For-You-All/dp/B0017ZZ1QU/]We've Come For You All[/ame], $5.99.

I personally like to get a physical CD but at $40 that is a waste.
 
The Greater of Two Evils was a special touring re-recording. Bands do them. When you get a new singer sometimes or change a substantial number of the band sometimes that band will rerecord some of their greatest hits with the new voice/sound. That way you know what to expect to hear on their tours. Lots of fans everywhere for lots of bands hate that shit but bands still do them. Exodus also at Metal Alliance Tour did it with Let There Be Blood in 2008. More often it is a live concert disc.

The Greater of Two Evils had a purpose in 2004 but not so much now. I wouldn't call it horrible or trash. It just isn't needed anymore.