So what's the deal with 10Gbase-T

Hey guys, Does anyone here have experience running copper 10Gbase-T networks? It seems like the standard just died out. For us it would make a lot of sense for our applications -- even if throughput and latency aren't as great. If anyone out there knows of any *copper* 10 gig-t switches (48 port?), I'd be interested to hear your experiences. I can't seem to find any high-density ones from major vendors. Thanks, Andreas