If I can vocalize a few opinions?
A good trilogy to read is the Azure Bonds saga. It follows Alias, a young woman who wakes up in an inn with only hazy recollections of the past, but for some reason, her memories don't seem to sync up with reality. The books in order are Azure Bonds, The Wyvern's Spur (sort of a side-step away from the main story to explore the adventures of some minor characters, which proves to be quite enjoyable), and Song of the Saurials. Great writing, story, and a plot so complex that it will keep you turning pages until you get papercuts.
Meanwhile, a bad trilogy to read? The Spellfire Saga, by Ed Greenwood. The plot is interesting if you can get past how MIND NUMBINGLY AIMLESS it is. The main character, a barmaid named Shandril, is a weepy dolt who (and I doubt anyone will challenge me on this) will "burst into tears" pretty much every other page throughout the first book. She engages in a tacky romance with an equally annoying man whom she's just met, and Shandril relies almost entirely on a band of elves to keep her alive. The only characters I found to be worth reading about were two elven warriors and a dwarf. I did not enjoy this or the second book, despite how great a writer Greenwood typically is.
But hey, there may be some one to vouch for the books. All in all, this is all in my meagre opinion.
