Need insight on buying SFH or MultiUnits in 2011 on up

[Mel Rosario]

I have noticed lately that single family homes have been falling in certain ares or Orange and Los Angeles Counties in California. Multifamilies have been dropping as well. I am wondering if buying SFH for investing are better these days than MFH?
SFH are cheaper now, hoping normal property appreciation, broader audience to sell to if needed, and I understand that if vacant, then no income.

MFH prices are dropping as well, bigger downpayments, may not appreciate as fast, cashflow seems to be more important, still getting partial mortgage payment if a tenant is gone.

I guess, I am wondering which would be a better investment today.