The Denon carts are at home on any grade/price of table, honestly. So, if the OP goes with the stock 1200MKII arm and uses say a Denon DL-110 cart - that cart will be at home on any arm he upgrades to, barring specific low mass arms, of course. The DL-110 has very low distortion, an extremely linear response, and tracks superbly - and has no inner groove distortion problems when set up properly - oh - and it's super quiet compared to most cartridges.

I have been looking for what actual improvement would be had by, say, using a cart that costs 10x as much as the DL-110. I mean, in truly audible differences.... so far I can't find any justifiable reason... seems the only 'real' difference you are likely to get is a different frequency response. I prefer the DL-110 myself to the nearly $1k Clearaudio Virtuosso I used to have. So, you see, I am not against using an expensive cart if it really makes a REAL difference - but I can't find anything to prove it is needed. On great recordings, on my table, on my main system, the playback simply sounds real ... enough said....
-Chris