Well, I havent gotten them, but my bff did and I talked to her the day of and day after. She was SORE but not in major pain. But, she doesnt have kids either. You will need A LOT of help with the kids the first week.
Silicone looks the best and will not shift like saline can and does. Saline makes them feel harder and less natural too.
Find a GOOD doctor and do lots of research, this isnt something you want to find a good "deal" on.
All of my friends that have them, and had a good doctor, are very happy.
Another thing to consider, since you are a mother, if anything goes wrong, most insurance companies will not pay for hospitalization or any aftercare. That bill will be yours. There are lots of risks.
I considered plastic surgery, had my consults and everything, but just couldnt bring myself to do it. Too risky for me.
We bought a deck instead. :)
Good luck with whatever you decide.