Hi keema,
Your receiver is not at all a bad receiver. Your question is lacking in what you mean by a "good" receiver. What are you going to do with it? What room? Size of room, etc.
It has good inputs, decent power with matched speakers and should provide enjoyable sound.
Speaker matching is rather difficult. Most have their preferences, mine is Paradigm and the Atoms, Titans, should be well matched. But what are you looking for the speakers to do? Are you looking for 2 channel stereo and/or HT audio.
I have the Yamaha RX-V659 and it is a major step up in audio compared to the Sony and old Technics I was using.
Here are some links, hope they are helpful.
PS: do a google search for "reviews of Yamaha RX-V457" and see what pops up, you may be surprised.
http://www.yamaha.com/yec/products/receivers/RXV457.htm
http://www.paradigm.com/Website/News/news2.html