The Sherwood is considered one of the best available at this time. Also at the top of the list is Oceanic’s EOS.
You do pay a premium for these regs at this tiime because they are relatively new models rated so highly.
The EOS is Oceanic’s top of the line and to grab that spot it had to knock the Delta 4 out of the position. The Delta 4 uses the same first stage (FDX10) as the EOS which is environmentally sealed and since it is no longer at the top it’s price has been reduced.
The Delta 4 is my first choice and what I actually dive with. It was adopted in 2008 by NOAH and the Coastguard as it has superior cold water performance. (expect the EOS to perform as well it wasn’t available at the time)