I have just finished at LMU and have found the whole setup perfectly adequate. There may be other groundschool centres that offer more gloss and glamour, but it's not rocket science - if you do the work you pass the exams.
Some of the notes might be a bit 'duff', but they are working on them and you can always ask if you have issues anyway. For the price compared to OAT it is no contest, and worth putting up with the rough edges. Bristol seem to get good reviews as well though.
