I find that the gray shirt is a bit of a lighter shade in person, but it is very pleasing nonetheless. The fit around my chest is a tiny bit loose, but I also have a flat chest so I'm not going to take any stars off for that or consider it a con. In fact, it's far more comfortable and durable that I thought it would be. The shape is attractive, I find that sweat and moisture is wicked away quickly, and dirt/dust doesn't seem to stick to it much at work. I never felt too hot or cold wearing it either by itself. It's also worth noting that I work in a warehouse, which wears out my shirts considerably, but these tank tops never had an issue. They still look new no matter how often I wash them, work in them, workout in them, or lounge around with the cats! I don't wear it as an undershirt often, but when I do it does a great job of keeping sweat away from my shirts and an excellent job of keeping me warm and comfortable in colder climates. Con: I can think of two very mild cons. First, I drive a convertible. The tags on this tanktop slap together in the wind repeatedly making it a tad annoying depending how I sit. Second, ever since the first wash (I use warm water) the hem will curl upwards. That being said, I just push it back down again before I fold it, and it doesn't really happen again while I'm wearing it. I would buy several more packs of these, but ever since I bought one pack, they've been sold out! I'll be keeping an eye on this product, as it's my favorite shirt in my wardrobe so far! I haven't tried the 100% cotton tank tops yet, but I will say that whether you're looking for an undershirt to preserve your outer garments, to work out, or simply to relax, it does it all. I recommend this to anyone. I'm skinny, ~146 pounds as I write this, and ~5 foot 10. I bought these in medium, and it's one of the best fitting shirts I have. As I said earlier, it's a little loose for me up top, but I also don't have much mass to fill the space. I get the feeling that even if I did bulk up, this shirt would still fit me fantastically. Especially on sale at ~$11 a pack, this is a great choice.