I say go for the mod. Easily the best way to improve the sound of your system for reasonable money. Most of our gear is ripe for significant SQ improvements with some well executed mods and part upgrades. Musical Designs upgrades are fantastic and he is known to make amps that play with the big boys for reasonable money. Upgrade it and hang onto it and enjoy for many more years.
To Finish modding or not
I have a pair of Adcom GFA 565’s. They have been modded By Musical Designs. Mini Elite it was called years ago. And it really made a difference. A/B comparison to in Modded was incredible. I know if I finish the next level of the current mods they will be better. How much better I am not sure. Have ran then next to a Krell KSA 250 and they held their own. So do you guys feel doing the next step would be worth it? About $1400 is roughly what I am looking at. Some like mods, some don’t. Some like Adcom and some don’t. Lol..... I’ll be driving a set of Maggie 1.7’s. Also how do you all feel about the Mcintosh MC 7150?