Used vs. Remanufactured engine.

So the continuing saga of my broken car keeps changing up. to summarize again My upper timing chain snapped which caused me to bend 4 valves (two intake two exhaust) I’m looking at approx 475 for the parts and labor plus275 for the gasket set. Then another approx 300 for the new Timing chain set. Im looking at a minimum of 1100 to get the car running that way.

I was looking into getting a engine instead.

the car is a 97 Altima with a 2.4L 4 cyl engine manual transmition

I found a used 97 with 45k miles on it with a 3 month warranty for 800 Shipped

and a Remanufactured on one Ebay for 1000 plus 350 core and 150 shipping. A friend told me in some ways a used might be better unless you know the company who is doing the remanufacturing to be reputable. I know Chuck knows a thing or two about cars and i know others out there do as well. I’d appreciate any help. Or also any other options people might come up with. OR if anyone knows a reputable company i can talk to.