Anchor Express has great prices on the ACR GlobalFix line of EPIRBs. They come in multiple varieties. The Globalfix V4 is the latest in the line of Globalfix products that has more built in redundancies. The GlobalFix iPRO adds an LCD display for battery life, GPS LAT/LON, operation instructions, etc. The ACR GlobalFix PRO does not have that screen. All come with the category II version (manual release) and Category I (hydrostatic release).
Check out the ACR GlobalFix V4, Globalfix iPRO, GlobalFix PRO at Anchor Express.