Reserve in JB is unlike any other airline reserve. If you bid right you'll be able to get a stretch of Long Calls, with min 14 hours call out, LCR may be for 3 or more days. Right now (and as any airline out there, things may change), we are properly staff, which means we have plenty of reserve coverage for a lot of Long Calls; especially in slow months like September, October, January, February, March - just think about it, five months in the year, you can average 18+ days at home and get paid the same. E190 - you'll be flying your @$$ off with 4-5 legs a day, just like express carrier, destinations will make you sick, always the same thing. Yes, you'll get a line faster, but at the same time you'll be use a lot when on reserve, and LCR in E190 is seldom. A320 reserve, my line average 15 days off, they drop additional 2PRL (pre release) days, that's 17 scheduled days off, with addition of Long Call reserve days, I stay home for 20+ days. Flying A320 is much better, more long legs, trans-cons, Caribbean, at worst you'll have to pull out Jepps 3 times, typically, you'll fly long 5-6 hours legs coast to coast, or turns to Caribbean, sometimes you get to stay in Caribbean for 24 hours at the beach, and then you'll appreciate you are on A320. Don't forget a nice tray table in front of you, and roomy flight deck, auto trim, and joystick, auto start sequence that you don't have to babysit :-)If you have a chance, bid A320, forget E190 (or E-180 degrees back to the gate for MX) A320 - you'll like the airplane and type of flying - Enjoy.
P.S. I'm a long x-coutry commuter.