Both locations are convenient to shops, and each has a train station. West Concord is generally less expensive and more priactical. Concord center is beautiful, historic, touristy, and has more shopping, and is where town parades, etc. are held. It would also depend on what type of home you are looking for: condo, single family, size. If you have any specific questions, I'll try to answer them. I love Concord- yesterday we walked part of the Battle Road, and today we're having brunch at the Colonal Inn in Concord Center.