Starting to be a lot of mixed metaphors going on in this post...
Let me clarify MY definition of "good enough" versus "reasonable quality."
I see "good enough" as a negative, the glass is half empty. The product doesn't really meet any standards, but for a one-time use, etc., it is "good enough" -- in other words, a throw-away product.
On the other hand, I see "reasonable quality" as positive, the glass is half full. This product beats the minimum threshold standard, and it is a product that I will have for some time, use often, etc., but it is not exactly the TOP possible product, nor the TOP possible buck.
An example might be the Corvette stacked against one of the Italian super-exotics. The Corvette, in its class, would meet my standard of "reasonable quality" for it will run virtually as fast as any of the exotics (indeed, it will eat their lunch if but a fraction of the extra expense in purchasing the exotics is brought to bear on the Corvette's performance) but it costs WAY under the top dollar rides -- like $100 K less. That, in my book is "reasonable quality." Good enough, on the other hand, is a 1993 Honda Civic, which will get me from point A to point B, with no frills, no excitement, and no performance.
In my world, with my expectations and life-definitions, Fram and Dino oils are just "good enough" which may be great for some people, but I prefer "reasonable quality." I've done my own testing, I've cut apart filters from EVERY manufacturer, both before and after running them, and I've ran the Amsoil products since the very early 1980s with stellar performance. I know where I come down on the issues, and why I do.
Your opinion may differ -- so be it.
Oh, most of my vehicles run in excess of 300K before I part with them -- and I've never had a motor come apart unless I was doing something stupid. Along the way, I've built Chevy, Olds, Pontiac, Ford, Honda, Mitsubishi, Dodge, Farmall, International, Cummins, Detroit, John Deere, Briggs and Straton, Tecompsi, Yamaha, motors.
The most recent overhaul I did was on a Dodge Dakota truck with the v6. The truck was owned by my 87-year-old church deacon. He changed the oil and filter RELIGIOUSLY at 2000 miles. The truck had 92,000 miles. The rod bearings were GONE on two rods and worn through on 2 more. The cam bearings were half-shells. The rings were locked solid into their grooves. The ridge on the top of the piston bore requried an air grinder to remove so I could pull the pistons.
This truck was never beat -- never even hauled a load! It is MINT inside and out, just what you would expect an 87-year-old churchman's truck to look like -- your Grandpa's truck that you can't wait to get when he passes on...
I pulled the motor, disassembled it for rebuild and hauled it down to my local engine builder, who does most of the engine work on the South side of Louisville (no small town hick here...). He took a look, asked me the miles and said, "Yup -- another Pennzoil, Fram user..." He then took me on a tour of the shop and showed me ALL the other engines in his shop that looked exactly the same way. Virtually all of them, die-hard Pennzoil/Fram users. He LOVES it -- it is good for business.
Note that I did not tell him what oil and filter this man ran -- he told me... and he was right.
In talking to the man who owns the truck, know what he said? "I've been using Pennzoil and Fram filters all my life... Never had a problem with them. Don't know what happened..." He then proceeded to tell me about all the OTHER cars that had motor problems that he has owned... His 47 Chrysler ("smoked like the dickens..."), his 52 Ford ("blew up the motor"), his 59 Chevy ("blown rod"), his 65 Chevelle ("right through the oil pan..."), his 69 Pontiac ("started knocking...")... By then, he started to realize that he HAD many problems with his cars over the years -- and in fact, there were only a COUPLE that he owned that DIDN'T have problems... He just thought that motors did that...
Again, that is just anecdotal. I can't produce a "scientific study" like some of you want, but I'm convinced.