Buy a TV with PASSIVE 3D. This is similar to movie theatre 3D. In face, the glasses you get in a theatre will work with your TV. The glasses are lightweight, don't require batteries and REALLY inexpensive (a couple of dollars). Plus passive 3D TVs have much less "crosstalk" (or "ghosting") than active 3D tvs. So if you are watching a 3D Blu Ray and see double images, it's probably because of the cross-talk in your TV. There might be settings to reduce the crosstalk in your TV.

But if you are buying a new TV, I recommend an LG passive 3D system.