As has been mentioned, I wouldn't worry about the 'model' information on the V5. It's quite common for this to be wrong and can be updated, with a bit of work and a few letters to the DVLA.
Only be concerned if you're looking at something like a SPS/R model and things don't stack up... (e.g. someone trying to sell a 'R' that isn't an 'R').
You'll know the score with servicing and belt changes. Lack of service history can be taken care of, just as long as you can either speak with the previous owner (verify where, when servicing work was done) or there's a wedge of receipts...
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