B&R PLC's are good like many other PLC's
they do what is wanted of them.
At the end of the day if you want to comunicate with your mate next door, you could use two cans with a piece of string between them.
My point is, most PLC's will do what you want.
the question is
What Price
How available is it in your area
What is the stock status of parts - same day or 6 ~ 8 weeks
What is the price of the programming software for the PLC
What is the price of the programming software for the HMI
This is the work that you need to do
Also work out the time to get your money back after purchasing the software - or oncharge to customer if you think you can get away with it