"most of its detractors are talking out their fartpiece as most have never flown one"
"I have to agree with Captain Smith, most people i have talked to about this (some of these are CPL chaps) who tell me how unstable and 'twitchy' the tommies are have never flown one. "
Well I have flown it, I do NOT think it is
unstable and 'twitchy', but I still think it is a rubbish trainer and can point to the specifics - harmonisation is poor, being sensitive in pitch and sluggish in roll. It does not teach trimming well as a lot of pitch changes are lost with the T-tail (great in an aircraft that is NOT used for training). It does have its plus points, having a well thought out cockpit layout and good viz. This does not mean I am a big fan of the 152, but I can at least see why schools use that for economic reasons!