2u/3u power supply advice

I have a 3u rackmount case and it's time to get a new power supply.  I had odd behavior, plugged in a desktop PS in there and the system is stable again.  Of course, not the case doesn't close.

I'm trying to get something in the sub selling-a-body-part category and found two that sound OK.  I'm totally not familiar with the vendors though so I thought I'd check here.

http://www.istarusa.com/server_power/1u_2u_3u_switching/tc2u50pd8.aspx

http://www.zippy.com.tw/P_product_detail.asp?lv_rfnbr=2&pp_rfnbr=1066&pcp_rfnbr=2&pp_name=&pcp_name=2U%20Single&pcpw_rfnbr=5&pp_code=P2G-6510P

The istar seems easier to find in canada but I have to plan around the 3 12v (15A each) rails.  Zippy claims to be a high end vendor and has one 32A 12v rail.

Anybody can vouch for the reliability of these vendors/PS.

I realize that these are 100$ PSU when it's easy to find 500$+ equivalent but I'm open to suggestions and advice.

Thanks

Gog