New rack or power conditioner

Babybear and I were going down the same path...I think room treatments are first investment...bass traps and something at the first reflection points are a must to start...

Although we don't know what you have in your room.

I assume you're pretty handy with wood working..I'd replace the MDF shelves with a hard maple...for not much money...2-3 inches thick. You can then experiment with a few footers like those from still points or symposium...

Also, do you like in a home? Do you have dedicated lines to your BAT equipment? I used to own a BAT VK51SE and a BAT VK P10SE and a BAT VK 75SE..it was all pretty current hungry and responds welll...again for not a lot of money...If you have your BAT in the Tice it maybe restricting the current somewhat....

Just my 2 cents with out knowing more...

I was thinking of changing the mdf to maple or ash, but I am getting kind of tired of the look of the rack ( the alltread). I do have a dedicated line. As for power cond. I am leaning towards the SR Powercells. I just saw a Gregitek rack and have to say it is a nice looking rack but not much in reviews.

As for building a new rack from scratch, the wood would be no problem, but the isolation of the shelves is the biggest hurdle. I guess some of Herbies Audio items would work.

I was going to recommend swapping out the MDF for slate pieces until I read your comment saying you're tired of the look. My rack is similar but with slate shelves. very heavy and solid feel. They pass the knuckle test with no ringing, just a dull thud that can be painful.
Mine is nearly ten years old and I am tired of looking at it but don't want to pay for better performance.

neither is that important as is room treatment...Can the power condition. Most if not all make no change at all. The room and only the room will make all the difference in a better sound system...the best of luck...