I would appreciate if you could give me some pointers what to check for i.e. typical weaknesses, when looking to buy an F78. my brother in law is after one, he has around Ã‚Â£3500 to Ã‚Â£4000 to spend. i already have one but i was very lucky, the 1st one i saw i bought but has been great! just want the same for him.