Closing Recommendation
The best choice between the Liebherr R 998 SME Litronic and the Sany SY980C-10HD will depend on the specific requirements of the job at hand. If tasks demand variable bucket sizes and higher digging forces, the Liebherr could be preferable. However, for operations requiring higher mobility, better slope performance, and greater tracking and swing speeds, the Sany may be the stronger candidate. Consider the nature of the terrain, type of application, and operational preferences when making your decision.