I switched from Cingular to Sprint and have loved the change. Unlimited calls after 6:00pm weeknights and all weekend. NEVER a dropped call. I even canceled my land line and went with only cellular it's so reliable. Oh, and NO roaming charges... ever.
Satisfied Sprint user here too.
My Sprint contract runs out in January and I need to shop it around. I have 3 phones on it and will be adding a 4th and I need to find the least expensive quality service possible, but, to tell the truth, trying to compare the various plans makes my eyes glaze over and gives me a headache. "I try to think, but nuttin' happens"