I'd recommend the Shannara books too. If you want just a single book read, then Sword of Shannara is the way to go. There is a great similarity to Tolkien, but in many ways it is a lot easier to read.
Its too damned similar - I didn't actually finish it because of how close it was.
I'd say that "Wizard's First Rule" as mentioned above isn't bad - you'd probably enjoy that one - its quite adult at times, but that's not a bad thing - just don't read any of the ten sequels - just don't, ever!
"Magician" by Raymond E. Feist is pretty good, a big chunky read, but easy enough and flows pretty well. Although I read it a
really long time ago, so I don't really remember it.
The best fantasy book I've read recently was "The Steel Remains" by Richard Morgan, but its pretty much the anti-Tolkien (and sets out to be) conflicted characters, sex, swearing on every page, bloody violence. It's terrific, but I'm willing to concede its probably not what you want.
Another not really suitable suggestion would be "Perdido Street Station" by China Mieville. Its an amazing steampunk adventure, thick as a breeze block but the prose moves like greased lightning. Shares some stuff with "The Steel Remains" though, and also features huge cityscapes and railway engines and things - so I guess not what you really want.
I'll add my voice to the "just read A Game of Thrones" chorus - read it, its not standalone, but at the end you'll be
glad.