Power Conditioners Suited to Digital Front End

I want the cheapest thing that works well, but would pay $3000 if it was worth the improvement. I was thinking of a Power Plant 300, but am totally open to suggestions. I want to optimize the perfomance of by Transort & DAC. I did buy a $3,000 digital interconnect (Stealth) so if a conditioner made a real difference I would be willing to invest. I just feel a bit sceptical about the product category, but I'm open to new ideas on the subject. Thanks.

I've had great results with Audio Magic conditioners on my source/pre's.

I use the Power Wing from http://www.audioexcellenceaz.com/powerwing.htm with my Accustic Arts transport and dac.

I would not use the Power Plant 300; had one, too noisy, and blew fuses too often. For my digital front end, in two systems, I now use Ensemble Isolinks. I have one Isolink Duo, which can handle two components; and several single Isolinks which handle one front-end component apiece. This power conditioning provided the single best improvement I've ever made to both my "big" system and my living room system. I bought the Isolinks used on this site and they are a great great addition to my two systems. I also use Ensemble power cords with them, and Ensemble interconnects as much as possible in both systems. I have tried many brands of cables but Ensemble provided the absolute best value and sound for my wallet and tastes. They are a Swiss company and their products are built like one would expect from the Swiss! Perfectionist.

My vote goes for Sound Applications, check out their web site and then do a search, there is a 12-XE available for under $1500 and well worth it. Workes for me. Six digital sockets six analog sockets. Keeps everything separate. YMMV