Modwright LS100 vs The followings

I am using a Modwright LS100. I think it sounds quite good, but I am wondering how does it compared to the followings:

1) Coincident Statement Line stage
2) ARC SP10
3) Doge 8
4) Supratek Chardonnay
I listen to SP10 at my friends place, it has a huge sound stage and very holographic. But the price in the used market keeps going up. Given the current market price, I am wondering is it is better to get a current production model.

Would any of this be a significant upgrade to the Modwright LS100?