Skywest:

12 days off, 13 off if a 31 day month. Can trade days off with other reserves in your domicile. Very little ready reserve in my experience. Most times you'll either be 5am-5pm or 9am-9pm, with 2 hour callout. Or long call which is usually more senior, and has a 12 hour callout. You have the option of selecting 'call first' or not, depending on if you want to fly or not. That being said, if they need you they'll call you either way. I'm in MSP which is painfully overstaffed at the moment, and I've literally flown .5 hours in 4 weeks, even with 'call first' selected. If you live in base, reserve isn't too bad. But commuting to reserve kinda sucks no matter what.