Hi Ash,
These are my two cents and I'm a newbie too, but according to the research I have done these are my findings:
SFH tent to attract tenants for a little longer, specially if they have children in school, since once they are stablished in a particular school distric they want to stay there. Multies tent to have a better cash flow, but tenants are more transient, however when your tenant vacates your SFH your cash flow is "0". In a multi your cashflow drops, but you still have other doors going on, hopefully.
Buying multies can be more beneficial if you are going to use conventional financing, because there is a cap in how many loans one can get. I believe the maximun is 10. If you finance 10 SFH, then you only have 10 doors and to continue you have to become creative. With multies, 10 loans is 20,or 30 or even 40 doors or a combination depending of wheather you get duplexes, triplexes or quaduplexes or a combination of those.
I have been looking at the market in TX (Dallas and surrounding areas in particular) and thse are my findings. Taxes are lower than in Norther NJ. The majority of properties I know of are SFH. They cash flow O.K, and appreciate well, for now. The market there seems "hot" for 2014.
A market I found interesting and actually has a lot of potential is Philly. Taxes are ridiculously there are low there and prices are no as high as all other cities in the Northeast.
I hope it helps!
Vania