I used to worry about needing to make sure I saved enough so I wouldn't have to pay any PMI. I really didn't like the idea of "throwing away" that money. My wife talked me into it and had me actually look at the real terms.

We ended up putting ~10% down on a house. The PMI for that was ~$70/mo. We refinanced a year later and the home value increased that we were able to get rid of the PMI after only a year. I would have missed out on the lowest interest rates ever really seen and bought with house prices getting even higher over $840 in insurance on a several hundred thousand dollar purchase.

I would suggest you don't assume you need to avoid PMI. For me, if I would have waited it would have cost me >$100k waiting to avoid "throwing away" $840. Obviously, every market is different, every buyer is different, the financial world is different now than a few years ago, your mileage may vary, I am not a lawyer, etc. Just saying, look at some actual terms before deciding.