Well, we will be moving to a different city, so that skews things a bit. We are aiming for a $40k downpayment for 20%. We're currently at $20k, and have been saving $2k per month. Downpayment obviously depends on the cost of living in your area though. Since we will stay in that house at least 10 years (no reason to move once we're in that city, and we know the areas very well), the rent vs buy calculator works out very favorably for buying. And since we live in a relatively HCOL city (certainly compared to where we are moving!), our mortgage payments will be less than the rent on our current place.
We're going to be looking for relatively small houses (around 1,000sq ft, which is what we have right now- and share with a roommate), and in the area we're moving there are many in the $175-225k range.
DH's salary will increase, as he gets raises every couple years pretty reliably. My salary will stay the same, as it is dependent upon government-set rates for the type of nursing care I provide. (Although to be fair, we both bill hourly, so our 'salary' depends a lot on the contracts we have and the hours we are putting in).
I'm curious how your numbers work out on the rent vs buy? Do you know the ballpark for the type of place you will be looking to buy?