The Borderlands series by Lorna Freeman is great. It's about a runaway farm boy turned soldier turned hero. The only problem is that there are only three books in the series and the author seems to have writer's block or other issues lately, so no clue if a fourth book is ever forthcoming. None of the books end in a cliffhanger, so you could read them all. But like other good books, you're left wanting more.
The Hurog duology by Patricia Briggs is pretty good too. It's about a lord's son, who was abused by his father, going off on a quest to regain his lands and prove his ability to rule after pretending to be an idiot for 10-15 years.
You might also want to try the Sword of Change books by Patricia Bray.
Oh, and if you like young adult, anything by Tamora Pierce. I recommend starting with
Alanna: The First Adventure.