Thanks for the additional info.
The answer is "It depends"
That seems to be the standard answer in real estate.
Right now in our market Condo's are Hot and SFR's are Cold! That could flip tomorrow. They are two separate buyer pools usually. You need to find an unbiased, experienced agent close to the area that can give you a factual analysis of the situation as it applied to you.
JD "Dan" Weisenburger, GRI
Vanguard Realty, GMAC Real Estate
In my humble opinion the single family home would definately be a better buy. The Sundales are a little older and it's a condo. The Newark propertyis a single family home, close to the Dumbarton and it will always resale. Hope this helps and good luck.