Takoma is not that bad. The farmer's market is a real jewel, as is the TPSS co-op. Heather, your family will almost certainly enjoy Mark's Kitchen with its mix of Korean and American diner food--where else can you get ginger tea and "healthy salad" with seaweed and tofu while your companion knocks back a burger and a milkshake? The middle eastern place next door is not very good, but I'd go back there before I'd hit Taliano's. There are a few interesting items available in the market behind the middle eastern place, which I think is run by the same people--nice if you need something like rosewater or sumac. Everyday Gourmet is not very good for meals, but their baked goods are alright. You're very close to El Golfo, Samantha's, Tiffin, Udupi Palace, Woodlands and Pollo Campero. Plus of course all of Silver Spring's offerings--including Whole Paycheck and TJ's. The Giant on Arliss occasionally came through for me in surprising ways, allowing me to feed my Ting (Jamaican grapefruit soda) and Herdez salsa habits.
It's also pretty easy to get from Takoma to areas like Penn Quarter, Wheaton, or even Georgetown. Those places will be much more accessible to you than they were in Rockville. I'm sure you'll miss some of the great Chinese food in Rockville, but there are benefits to living closer in to the city and I know it won't take you long to unearth them. Congratulations on your move! (I hope you're done moving for a while after that...)