After two former disappointing attempts at peel-and-stick tiles, I tried these COLAMO white subway tiles and - HALLELUJAH -- they look great! Third time's a charm, I guess. These are much thicker and, importantly, they have a glossy reflective shine that really makes them look authentic. (The others I tried had a matte vinyl finish that screamed fake.) I did have to buy two more sets of these, however, to finish the job along the wall shown in pic. And the thicker tiles also means they're much more challenging to cut. Luckily, I had the proper tools to make the job go a little easier: An Exacto knife to score the tiles, and heavy-duty scissors for cutting. (Regular scissors won't cut it, so to speak.) The adhesion is very good but make sure the peel-off paper is completely peeled off. (The paper tends to rip at the corners and remain attached.) Also, make sure walls are clean before applying -- and take your time with the entire process.
The bottom line is these tiles are a bit more pricey than some, and more challenging to cut through and apply -- so, are they worth it? YES!!! The end result is a beautiful shiny backsplash that looks amazingly like the real thing. Highly recommend!