@Patrick Reilley I completely disagree with Bryan L.
If you buy the property right, multi-family is always the way to go. It offsets any vacancies. I believe this is very important. If you buy a SFH and lose two months rent...it will hurt. If one tenant moves out of a fourplex you can make it work. You will still be collecting 75% of your income.
Also, multi-families for the most part are strictly valued by their income potential. SFHs not so much. It's a different clientele. SFH appreciation is nearly impossible to predict and should not be taken for grant it. MF appreciation is much more predictable. If the economy takes a dip you can always add nice features or amenities to a MF property to differentiate yourself and your property from other competing landlords and apartment communities.
For me, MF properties take the emotion out of the purchase. I am a numbers guy and while I do LOVE real estate and I love the properties I currently own, I purchase on numbers first, location second, and building type third (I live in Florida concrete block is MUCH more enviable when termites are your state's bug). My first purchase was a 5 plex and while I ate it in 2014 (major renovations, updates, and turnover) 9 months later I am living in a 1,000 sq foot house and the 4 plex is collecting $2400. I could rent the house out for $1,000 conservatively. So, my initial investment of $140,000 plus the $30,000 I put into the property takes me to $170,000. It could generate $3400 a month. I am at the 2% rule AND three of the four apartments are new. It all depends on the deal but MF investing to me is the way to go.