The ease of use when performing payroll calculations is wonderful! It allows you to quickly calculate many different areas that would otherwise take hours or days if done manually, such as employee paychecks/pay periods etc., deductions from paycheck (such as FICA), W2s - which can be used in lieu of timecards where employees do not provide them upon request by their employer; tax withholding tables & rates are very helpful too so it's easy access all this info at once without having to go through several other programs like TurboTax just to figure out your taxes correctly each year!! There isn't anything I dislike about irtopic yet because they've been great working directly wih us since day one but there really aren’t any downsides either except maybe pricing could possibly have more options given during setup? We're using these products primarily internally only within our organization though we also.