Experience with the Dell PowerConnect 8024F - compare to the Cisco Nexus 5010

Does anyone have any experience with the Dell PowerConnect 8024F 10-gig switch that they'd be willing to share? How does it perform? How reliable is it? My experiences with the Dell switches have been less than favorable to this point, but I am willing to concede that some of that may be colored by my Cisco bias. Would you trust this Dell switch in a high-performance computing environment, where the ability to move data for sustained durations at rates close to line speed is paramount, along with high-reliability/high-availability? Any feedback is welcomed. -- To him who is able to keep you from falling and to present you before his glorious presence without fault and with great joy