well here in florida ive worked for 2 differnt blood banks, both which use hemonitcs and alxy. i personally like the hemonitcs for 1 on that if u cant get the second unit u can still use the unit without "throwing" it away. on alxy its all or nothing. also on alxy if u dont get any blood just a stick the donor is def for 112 days. when i used the hemonitcs if u get one unit its 56 days and if u get nothing u can try the next day or we would put them back to wholeblood.there is no def wait on that like i said alxy is 112 def wait. im not if that is what it is eles where but at the center im at now that is how it is. also on alxy the draw/return cycle is like 4-5 and on the hemonitcs its 2 so ther is a big differnts on this