I need a book that's semi-introductory (advanced undergrad to beginning graduate level, if possible) on complex analysis, particularly one that covers power series well, but should be fairly general. I currently have "elementary real and complex analysis" by Georgi Shilov and while it's not bad, it's not my favorite, either. Also it seems the primary focus of the book is real analysis and the complex analysis is just a side topic almost. I am hoping perhaps for something rigourous but does not assume terribly much prerequisite knowledge, a little prior complex or real analysis perhaps. Thanks!