There are pros and cons to both, however, I think that it should be stated up front that RepAgents are the latest offering and I believe that Sybase would expect you you to use that. Certainly the documentation for LTMs is a little buried implying that they do not consider it to be as current as LTMs.

LTM Cons:

* Older technology. Not sure if it is being actively supported.

* Not integrated within ASE, so there is a (small) performance penalty.

* Separate processes, so need additional monitoring in production environments.

LTM Pros:

* Possible to restart LTM without having to restart ASE.

RepAgent Cons

* If it crashes it is possible that you will have to restart ASE in order to restart RepAgent.

RepAgent Pros

* Latest, and presumably greatest, offering.

* Tightly integrated with ASE so good performance.

* Less to manage, no extra entries in the interfaces file.