Anonymous wrote:My parents have watched my 11mo since he was almost 3mo. My mom is an amazing caregiver (in general), and she used to babysit kids when we were in grade school. My dad is retired and loves having grandkids over. My dad, who rarely interacted with us as children, is really into taking care of my son. It's adorable! In my dad's case, I think it's been good to have my son there because otherwise my dad would just watch TV all day and argue with my mom

I had some reservations regarding TV/screen time and over-spoiling, but they've been really respectful of my parenting style.
My MIL visits for 2-3 weeks at a time and will watch DS in our home fulltime when she visits. MIL is older and I always feel bad having her watch him, but she really prefers it - gives her more time to bond. That said, I prefer having my mom watch him because she's younger and healthier.
In your situation, I'd go with MIL. But make sure DH is heavily involved in decisions and communication. And this will only work if you aren't too stuck on your parenting style.
I don't compensate my parents in a fixed way, but plan to pay for vacations or large home renovations - they wouldn't accept payment for watching their grandson. We come from a culture of taking care of generations, so we fully expect to take care of our parents/ILs when needed.