The Mini gets it's reputation for being unreliable because for many years people took advantage of how cheap they were and never actually maintained them. People would drive it until something went wrong, usually avoidable if it had been serviced and maintained. There's no reason for a well looked after Mini to be unreliable. 
Unless its owned by GingerJoe *hides*
Poor Lad, he really doesnt Deserve it, But his clubby really does have character doesnt it

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Personally i would say the first thing you need to decide is wether you would prefer Clubman (Square Front) or a Normal saloon mini (round nose), that will play a large roll.
10/69 Clubman (saloon and estate w 998cc engine) and 1275GT (with 1275cc – non-S -- engine) introduced
08/80 Clubman and 1275GT discontinuedTheres your important Dates for the clubman, anything will do as they bearly changed but obviously, money wise, The earlier the better.
If your looking for a mini that is really going to hold its price, get a LTD edition, there is loads most of which are Limited to 1500, 2500, or 3000 Including Exports. The list could go on for a while, but heres a few, Jet Black, Red Hot, Designer, Park Lane, Chelsea, Piccadilly etc etc. There is also minis like the blue star (Made for the german market) which were Export only, these are very rare as tiny number like 300 were produced. This is why many enthusiasts get Annoyed when there car is called a "cooper", there really is so many variety of mini to choose from that many wouldnt belive it.
Edited by Mini-Mad-Craig, 15 March 2009 - 12:37 AM.