I think that if you own the 9000es now, the most cost efficient/biggest bang for the buck option would be to modify this player. The 777es should be better and have greater weight and stability (I was told) but the cost of the 777es and the 5+ upgrade would be at least $1500 more than modding the 9000es for slightly better performance.
I just purchased a 9000es and am currently having it upgraded. I decided not to pursue the 777es option due to the extra cost (I went with the balanced option) but I probably would go with the 777es option if money isn't a concern. I asked Allen Wright about the differences and he told me that he thought the 777es was superior but depending on your tonal tastes, you might prefer the 9000es on redbook.
As far as modded player vs Linn, I think you'll get quite a few different responses. My gut feeling is that the modded player would sound better. But since you own a Linn, you might like the Linn sound. Another thing to consider is that if you pick up a used Linn SC and don't like it, you can resell it easily for no loss. If you mod the 9000/777es player and decide to go with the Linn SC instead, you will lose something immediately. Keep us updated.
I just purchased a 9000es and am currently having it upgraded. I decided not to pursue the 777es option due to the extra cost (I went with the balanced option) but I probably would go with the 777es option if money isn't a concern. I asked Allen Wright about the differences and he told me that he thought the 777es was superior but depending on your tonal tastes, you might prefer the 9000es on redbook.
As far as modded player vs Linn, I think you'll get quite a few different responses. My gut feeling is that the modded player would sound better. But since you own a Linn, you might like the Linn sound. Another thing to consider is that if you pick up a used Linn SC and don't like it, you can resell it easily for no loss. If you mod the 9000/777es player and decide to go with the Linn SC instead, you will lose something immediately. Keep us updated.