Speakers To Use With McIntosh Receiver....

I haven't posted here for quite some time. I have finally sold my ranch style condo and moved into a much larger home with a family room. I am currently getting ready to set up a second McIntosh system in our family room. I currently have McIntosh MAC 4100 Receiver rated at 100 WPC. I am looking at getting some speakers that will mate well with this unit - but haven't looked at any smaller speakers for years. Some good suggestions would be most appreciated. I'm trying to keep the cost under $600.00 (used) if possible. I can go with either stand mounted speakers or wall mount speakers. Many thanks for your input.