Like adecisco said, it is all about the requirements and budgets. Generally the 3560X and 3750X are good multi-purpose switches. Now the 3750X are being replaced by 3850 and 3560X will soon be replaced by 3650. If you are able to share what you need, we can help picking out HW. This includes things like:
- Number of ports
- PoE or non-PoE
- L3 required?
- Stackability?
- Purpose of the switch (eg. Core, User Access etc.)
- Any mandatory feature