In general I like this simflag more than the previous version of EPLab. At first the build quality looked amazing (everything fully metal). They switched to a new micro USB connector which was in the end in my opinion a bad decision.
I have used the product for about 2 days and then the product started to fail already. After investigation I found out that the micro USB connector was the weakest link and already completely fell off. What I found out that this is a known weakness of the used Arduino Pro Micro board. When you search on the internet for Arduino Pro Micro and USB issues you will get many results.
They have tried to fix this issue by using some tape which was clearly not enough.
Therefore, I would not recommend this simflag.