I read the chronicles and legends a while ago - enjoyed them muchly. Anything by Weiss & Hickman is generally good.
Other than those, the other dragonlance stuff can be very patchy - some absolute rubbish, but also some good stuff.
I read the first tales trilogy and jotted down some notes on the authors as I went and I've updated it as I've read other
DL books.
So without further ado - here are my notes!
Mark Anthony - enjoyable, easy to read
Harold Bakst - quite readable but a bit silly
Nancy Varian Berberick - very cliched, difficult, boring, nothing to hold interest
Dezra Despain - alright
Jeff Grub - quite fun, pratchettesque, interesting
Mary Kirchoff - quite ok
Richard A Knaak - actually quite good, very readable
Roger E Moore - alright but crappy realism
Douglas Niles - very enjoyable
Kate Novak - readable
Nick O'Donohoe - midlingly ok but sometimes silly
Dan Parkinson - ok, amusing (Gully dwarf stuff)
Danny Peary - utter crap
Kevin Randle - ok
Barbara & Scott Siegel - quite alright, patchy
Morris Simon - quite alright
Warren B Smith - quite reasonable
Paul B Thompson & Tonya R Carter - kinda reasonable
Michael Williams - crap, ok but hard to read
There's a caveat that most of these opinions are based on the Tales short stories - in many cases probably some of the author's first writing attempts - their subsequent novels *might* be better.