I really like the Fischer Bruckner 7 as well. Personally, I think his tempos really work and are something of fresh air for Bruckner.
The Fischer 5th is a recording I really liked initially. I think the recorded sound got me, it's so damn good. After spending some time with it, I've found the movement 1 and 2 to be a bit underwhelming, and maybe underplayed too. The final three movements are excellent, thought out, and really work together.
It's a mixed bag really.