Honestly you wil very rarely get an unbiased opinion. Everyone in this thread who has said FTE is better then OAT haven't been to OAT and vice versa. As has been said BOTH are excellent schools but with slight differences over each other. Personally I am at OAT and having a great time so far. I choose OAT over FTE for a cpl of reasons. Firstly OAT get all of the groundschool out the way first, FTE split it up with the flying, I would rather it this way. Personally I don't think the cost difference is so much that it should sway you either way. The main reason however that I chose OAT is that I would FAR rather spend 5 months in the US then 12 months in Spain.
Its all down to personal preference and what you think will suit you better. I personally thing that OAT probably have a slightly better name for themselves. I know a number of current pilots flying for a number of different airlines and I spoke to them about my training options and nearly all of them said OAT was the way to go.