Polymaker ASA is what I'm currently using. You can grab 3 KG spools on Amazon for as low as $50-60 depending on the color (new via prime) if you keep an eye out.
The mix of ASA and a higher flow printer as resulted in a lot more fickle prints though, but this is also true for PETG. Things like EM vary some as a function of speed, so I've found that I need to print all my features at a similar speed.