I've always been a fan of Samsung design, but this phone in particular is a high-quality product. It's probably one of the best flip phones on the market right now.
This phone has a lot of great features but its thin and stylish design is probably the greatest. The phone is only 0.51" thick, so it doesn't make my pocket bulge at all, but it still has a nice sturdy feel in my hand. It's even withstood a fall from the top of a pickup truck (with only a minor scrape in the plastic). The screens are bright and colorful; I've never had any problems with the front or main displays.
The SLM's main disadvantage is its standard keypad, so if you text incessantly this probably isn't the phone for you. But even though it doesn't have a fully keyboard it does have tons of extra features...I haven't even begun to tap into the video-sharing/emailing/mp3-playing capabilities it offers. The 2.0 megapixel camera is always handy, and it flips completely around so you can see what your picture will look like before you take it (it's easy enough to rotate the inverted image on the phone). If you plan on taking a lot of photos or video clips with your camera, or using it to play music, getting a micro sd card provides plenty of extra storage space and is definitely worth the added expense.
This easy-to-use and stylish phone has kept me quite happy.