Sean,
I have to agree with Don that the strategy determines the vehicle. I will say that personally I prefer multi-family properties, and I own both. I do not generally flip, and I do not buy property in hopes of appreciation which may or may not come to fruition. I buy revenue streams represented by buildings. There are a few things to consider:
1. When we speak of value, the SF world is very different from the multi. In SFR the value is set by the comps. That's it. This doesn't offer a lot of opportunities for expandability. On the other hand, multi property is valuated based on income, so there are plenty of opportunities to improve the value by improving the NOI.
2. It is true that singles tend to attract more long-term tenants. Why? Because they feel like a home and not just some place to stay for a while. Can you accomplish this with a multi? Yes – you have to chose the right property.
3. Where I live, the rents I receive for good apartments are practically the same as SFR. However, I can buy apartments for a third less per unit. For instance, I have a 10-plex under contract as we speak for a bit under $375k. That's $37,500 per unit. Each of these rent for around $600. Half a mile away I have a single which rents for $650. I paid about $40k for it and spent $15k on the remodel four years ago. Today, that single would have cost me $30,000 but I likely would have had a bigger remodel…
4. I can replace a roof on a 10-unit for quite a bit less than on 10 individual SFR.
Bottom line, there are benefits to both. If the stars line up and a really great quick flip opportunity presents itself – sure, why not. But long term – multifamily is more stable and more predictable in my opinion.