I often get this question, which is better Sharp Cash Registers or SAM4s Cash Registers? And the answer really depends on the features you are looking for. Hands down if you are looking for a good cash register that is easy to use and program for retail or restaurant operation look no further then the SAM4s ER-650 or ER-650R cash register. For the price you won't find a better value and a great work horse of a cash register. If you are looking for a entry level machine with an impact printer that is built like a tank then check out the Sharp ER-A320 cash register. The A320 is a down and dirty touch cash register with 10 departments.
What I have found is that both Sharp and Sam4s cash registers are very even in terms of quality and features. However Sharp seems to be a little more expensive in the higher end cash registers and often they require more expensive options then SAM4s.
Most SAM4s and Sharp Cash Registers can have integrated credit card, gift card, barcode scanning and computer interface
So bottem line is that it is hard to go wrong with either brand. Just make sure you don't under buy for the features you are looking for.