I would stick with Telefelx seastar series. There is a new player on the street, UFLEX, but I know nothing about them besides the fact they are roughly 1-$200 less than the seastar system.
As for sourcing the parts, Jim at By owner (see rotating link above, surplus unlimited, flouder pounder, or ebay.
Edsons are purdy, their factory in down the street from my office. Their new SS wheel os by far the nicest I have seen. Other sources for wheels are gemlux and schmidtt. I think I saw a close out deal on Edson's at Defender industries,
www.defender.com
good luck