I have one under test at the moment and it is significantly better, but it's still not nearly good enough. With the processor that's in it it should be doing 40 second superPi times, but it's doing 52 seconds - but it was doing 90 seconds!
To give a comparative example - I have an ASUS PH-1 sat next to it with a 2.8GHz Celeron D in it vs. the AH-1 with an A64 3500+. Both have 2 x 512Mb Corsair Value Ram and 80Gb SATA Maxtors in. And the Celeron is doing 48s for 1M superPi vs. 52s for the 3500+. Now that doesn't seem right to me.
If you can live with the poor performance, then it's very tidy, well built and silent.