Choosing the most suitable Enterprise Resource Planning (ERP) system in Singapore involves a lot of considerations like the scale of your company, its industry, individual requirements, and budget. Nevertheless, there are some ERP systems that are almost all-time favorites and normally seen in many Singaporean companies because of the solid performance and flexibility they provide. Below are some of the leading ERP systems that you could think about:

1. SAP ERP: This system is a top choice for large companies because of its extensive functionality and expandability. SAP has a variety of industry-specific solutions and is famous for its superior analytics and reporting features.

2. Oracle NetSuite: This cloud-based ERP solution is mostly used by small to medium-sized enterprises. It contains a wide variety of features, financial management, CRM, and e-commerce system.

3. Microsoft Dynamics 365: This ERP system is compatible with other Microsoft products and provides flexibility and scalability. It is appropriate for all kinds of businesses and contains finance, operations, sales, and customer service modules.

4. Sage 300: Previously known as Sage ERP Accpac, this one is designed for small to medium enterprises. It has strong financial management capabilities and is reputed for user-friendliness.

5. Epicor ERP: In particular, it is favored massively in the manufacturing and distribution sectors, as Epicor offers industry-specific solutions that boast flexibility and scalability.

6. Infor ERP: Infor provides industry-specific solutions and the user-friendly interface is one of its major attractions while the strong analytics are another positive aspect. It is suitable for businesses of various sizes.

7. Odoo: This is a very flexible open-source ERP system that can be adapted to the needs of any organization and is very economical. It is most effective for small to medium-sized companies and its wide range of modules is an additional advantage.

8. Acumatica: This cloud-based ERP is renowned for its flexibility and ease of use. It is perfect for small to medium-sized businesses with powerful financial and project management features.

Making the right ERP choice entails an exhaustive needs assessment to be done, as well as the anticipation of possible future growth with at least a consultation of an ERP implementation authority to ensure that the selected system fully integrates with your business goals.