Which is best software for Medium sized construction company in gulf , a)Tally ERP b)SAP C )Microsoft Dynamics GP d) or any other please name it

I am of the opinion that the best software is anything that meets the requirements and standards of a company. These would vary for every company and so will the "best" software be. It's the same as the needs of a man is different from the needs of a woman. And a woman has different needs compared to the needs of another woman.