86 was a shit year for metal. However of all the corny, commercial, light metal albums Tubo is the best. Priest had a crack at taking on the likes of Europe, Ratt and Dokken and all those other god awful bands at their own game and beat them in my opinion. Turbo is pretty average in comparison to DOTF, SWOD, Stained Class, SFV, BS but it's so much better and has stood the test of time better than everything else that came out at that time. I walked into a bar in Vancouver a couple of years ago and Turbo Lover was cranking and the bar was going off, people were loving it. So anyway Turbo is a classic, probably one of the best light commercial metal albums ever. I've gotten way more enjoyment from Turbo than Nostradamus. 

Point Of Entry has three great, classic metal songs, Desert Plains, Heading Out To The Highway and Solar Angels. The rest of it is crap. Everyone seems to like the song Hot Rockin' but I think it's a fucking stupid, shitty song and probably the second worst on the album after You Say Yes. Still though based on the strength of those three songs I would have to say it's a classic as they are that good. If I was compiling a 20 song Priest setlist Desert Plains, HOTTH and Solar Angels would be on it. Not sure if any of their other albums would get three songs in a dream setlist. There's not one song on Nostradamus that would make that setlist.

So in summation both are classics.