The best of the older B&O decks is the 3000. However if you like the look of the 1200 series, the one to get is the 1202 as it has the same basic chassis. The 2000 is not quite as good but does have a hinged lid.
Of course if you want the very best, the 3000 Thorens is the one to get though these are rather pricey!
For the previous decks, the SP12 is the best cartridge. If you do go for the Thorens, an SP8/9 was the cartridge of choice unless you go for the 12" arm in which case a modified SP1/2 will be called for. See Frede for details!