I Bought the ipad 16gb wifi for 399. More apps, I prefer the software, and dont need to worry about my device no been upgradeable to the newest software. I have it 6 months now and not 1 issue. I had a nook and it lasted 3 weeks, then the replacement lasted 2 weeks, so i bought a kindle fire which lasted 2 months. I sold the replacement on craigslist to get the ipad. (its suits me but may not suit someone else. I dont need 4g)
I would consider the samsung galaxy tab or nexus 7 too. Reliability and a sturdy device is the key. I have mixed look with samsung products.