Bests & Worsts Reviews from Amazon

1. See photo comparison. 2. DON'T trust ANY reviews on quality that are older than 2018. 3. The quality on the US Acrylic tumblers has gone WAY down since 2016. It's possible that the company has changed hands since then, moved over seas for production, or, are at least in part obtaining some of their product from a third-party, and selling them as their own) as I can't figure out why else they've changed so much in two years; There's just no logic to it, because nothing deters repeat business like surreptitiously replacing a good product with a bad one. Details: I bought the 14oz rock tumblers two years ago; We liked them so much Hubs jumped back on Amazon a few days back and bought what he thought was replacements for those. The second I pulled the new tumblers out of their protective sleeves I knew there was something NOT right: The plastic walls are thinner, and, more damning, THE LIP IS SHARP. Let me repeat: No matter what past reviews say, it's no longer smooth and rounded right where your lips touch the glass, a micrometer below the apex of the tumbler's lip (technically, on that spot where the lip an the side meet), and I can imagine that repeat exposure of one's soft lip-skin to these things cannot be comfortable or sustainable. This sharp edge is probably due to the walls of the tumblers being so much thinner now that they couldn't meet the minimum curve angle required to mold a properly smooth and rounded edge (due to the now-deficient wall depth). Even stranger, the size of the 14 oz tumblers arrived as 12-oz tumblers. This was NOT an order error on our part: All Hubs did to replace the 14 oz rock tumblers was click "buy again" in our past orders list, but it seems US Acrylic has replaced the 14 oz rock tumbler with the 12 oz tumblers ON THE EXACT SAME PAGE. In other words, there was an unannounced switch-a-roo on the part of the seller that resulted in us automatically purchasing the wrong size and model. IF they don't sell them anymore they should just retire the product via enabling the "No Longer Available" notice on the page. I have to ask: Did they think no one would notice the difference in any of this? How dumb do they think people are? This leads me to: 4. The "Classic 16-ounce Premium Quality" tumblers: We'd also wanted to get some pint glass size of the 14-oz we'd owned since 2016, so he found them through the US Acrylic page. Surprisingly (but not surprisingly :P) , they are of even MORE sub-standard quality than the "replacement" "14"-oz tumblers (that arrived as 12 oz): SHARP LIP. Ridiculously thin plastic, in fact, even thinner than the new 12 oz version.They were clearly NOT manufactured by the same company as the 2016 14 oz tumblers, or even the 2018 12-oz we just received (see photos). AVOID these if you value consistency, comfort, and basic quality. P.s. We're sending them all back.