You mention that you want good sound, don't want this to be an extended search of thrift shops and estate sales, have a $1000 budget, want to play analog, and like speakers with a fair amount of bass and slam. What is not mentioned is where you live and what used markets or dealers you have access to.
The one option is to go to a dealer with pre-owned audio equipment. You won't pay less money than a CL purchase, but you will get a piece that has been checked out and often has a bit of warranty. Many mid sized cities have stores that deal in only used audio, or retail stores that have a used audio room or shelf. This is just one option.
Choosing speakers unheard is a bit riskier way of doing things, but it can be done. I lived in a small Eastern Washington city for 20+ years, and bought all of my audio gear over the Internet unheard. I did pretty well and put together some good systems. However, its not an option for everyone. But the speakers will define how the system sound, so getting a chance to listen to them is a good course of action, and you might be able to pick up a good pair locally. For the type of sound you describe, I would be looking at various Klipsch, JBL, perhaps Cerwin Vega, certain Infinity, perhaps floorstanding Mission, Paradigm, Sound Dynamics, and several others to choose from. If you can find your speakers locally off the used market, that would be the best option. But sometimes some very good speakers like the JBL S series come up for sale as refurbished from dealers on Ebay or other sites that have closeouts, and shipping is free. That makes them an awesome value. But the downside is that you are buying unheard, so you have to do your research carefully and be willing to take a bit of risk.
For amplification, don't forget a quality integrated amp if you are not a user of AM/FM. You will get a better amplifier for your money with a quality integrated versus a receiver. Integrated amplifiers are kind of shunned by the serious American audiophile, so they don't command as high a price on the secondary market as separate amplifiers and pre amps. There is a lot of good value going this way.
If you can find a quality used turntable from the 80's or 90's, I think there is a lot more value there than the current entry level offerings being produced today. The trick is to find one that is well cared for, and the seller knows how to pack if its being shipped. The Technics SL 1200 is a good example of one that can be modestly priced, rugged and dependable, and offer respectable sound. With a bit of shopping you should be able to find a well care for example under $400.
