I am not sure what you mean by "good quality". If you mean "higher end/priced" working with a realtor is the best way to go. I do many single family rentals a year as well as own several of my own single family rentals and the most availability regardless of what type of rental you are looking for is always for July or August occupancy because most rentals revolve around the school year. Since most tenants have to give their landlords 60 or 90 days notice you will see a large amount of rentals coming on the market in April and May.
Depending on your price range, overall the rental inventory is very low now.
I would be happy to set up a search for you that wil email you the rentals that meet your criteria as soon as they come on the market. Please contact me if you would like my help.