Jenn-
Getting a multiengine rating and buying multiengine time blocks appear to have a different story. I am sure Ari does ratings well, but time building rags out those airplanes. I used ATP in Atlanta for my multi-commercial-ifr but they do not do block time building.

At this point I am thinking about finding a pal to share time on a local FBO seminole. FBOs are more than happy to entertain bids on blocks. All you have to do is find a buddy to split it with and voila, you have a time builder.