A lot of those negatives against OAT just aren't true in my opinion.
Visit each school and see what you think. I think the main bonus of OAT is that you get all of the groundschool finished before you start flight training. This is a big plus in my book. I wanted to actually enjoy my flying and not have to be worrying about exams.
I see spending a year in Spain as a negative for FTE, but that is just an opinion because I don't like the country. I would far rather spend 5 months in Arizona and enjoy the US (have some amazing memories of this, especially road-trips with all your mates to LA, Vegas and the Grand Canyon)
OAT was also used by BA for their sponsorship schemes when it was running so that isn't just a plus for FTE. I also don't think that everyone who comes out of Oxford has a complex about them. Nearly everyone on my course has a job and its 3 months after graduating!
The problem is that no one was been to both schools and so they can't comment! However, I have a number of friends who went to OAT and then went to Jerex for the BA JOC and they all agreed that OAT was the better establishment.