TestComplete or LoadComplete

Dear Tanya, Dear Smartbear Support,

There is a functional testrequirement of my new testproject, i would need your precious advice which tool is the best one to cover this testrequirement:

Teststeps:

1. Start testapplication1 on WS1(workstation) with user1 and create new message via testapp. and send msg. to user2

2. Start testapplication2 on WS2 with user2 and listen for comming msg. if msg. received, ackknowledge it and send it back.

3. repeat step1-2 for 500 msg. and measure send/receive time for all msg.

I worked with testcomplete since 4 years and i do know that i can implemente this test with TC by using distributed test. But i am not sure if TC is really the right one for this kinda load test with huge dataset(500 msg.creation/send/receive). Maybe LoadComplete is the right one for it?

Any advice would be appreciated. Thanks.

Lee