Have used a warm-weather baselayer for a few years, Craft was the first brand I tried. The sale price made it a no-brainer I needed replacement. White does show some sweat stains (although not until several months of wearing it 2-3 times/week) so also bought a black one this time.
It's still too early to tell if this will fall apart over time. I plan on using it weekly as I did with my Pearl Izumi baselayer and so far it's lasted me 3 years with no issues. So I will compare it to my PI. It's very light, and comfy, keeps me cool in the Florida hot and humid weather. I don't feel sticky at the end of my rides and still able to not feel overheated. I bought a size medium, which I usually wear, but appears to be more loose. Maybe next time I'll order a small and see if it'll fit well. Anyway, like I said earlier my review might change over time since I'm going to compare it to my PI that I've been using for over 3 years and so far nothing wrong with it.
Used under jersey in all weather conditions. Keeps a layer of ventilation when it's hot out allowing cooler air layer between skin and jersey, jersey doesn't stick to the skin.