I just get the cheapest wiper blades I can find, because they usually are shot after a years worth of sun and mud. I buy them before the rainy season so that they're in good shape for winter. Such as it is here in California.
I love my Triple Edge wiper blades from thewiperstore.com. They use to sell them at Walmart. The blades last for years and they have a lifetime warranty. When they start to wear out you call them and let them know and they send you brand new ones and DO NOT charge you for the shipping. Best money you will ever spend on blades and their customer service is excellent.
2000 Sahara, 3.5" Rubicon Express Lift, 1" spring spacer & 1" Body Lift, 33" or 35" BFG Mud tires, Front & Rear ARB, Rancho 9000 shocks, UCF Ultra High Belly Up