My go-to quad lately for higher-performance low-voltage tasks has been the OPA4332. But it's a little pricey for some more pedestrian jobs.
Is there a CMOS RRIO down to ~2 volts equivalent of the LM324 that you use?
The TSV99x is fast, low voltage (2.5 vs 1.8, though), and cheaper than the OPA4332. But not unity-gain stable. I'm not clear if an amp that's only stable for gain >= 4 or