The EVO uses what's known as TLC NAND. In general, TLC NAND has less write endurance than MLC or SLC. SLC is the best, but very expensive and only really feasible for enterprise use, it has the highest write endurance. MLC is more common than SLC and has less write endurance than SLC but more than TLC. So in general SLC > MLC > TLC. TLC is the cheapest solution however and that is why they are cheaper.
Before you go off and spend more money on a MLC though, I have to tell you that the write endurance of TLC is more than enough for the average user. Especially if you don't fill the drive to capacity. I have a 500GB 840 EVO and it has 67.88TB of host writes on it. SMART still shows it at like 99% endurance, I've had it like 3 years now. I'm probably going to replace this drive for something larger long before it starts having problems.
If you want a drive with MLC, then you can look at the Samsung 850 Pro's, however they are more expensive. If you are an average user, you'll never likely wear out a TLC drive.