@AlbertoT :
Just go on their site and download for example the RPG 2 demo!
It really can put lot of characters at same time !
And like Unity it is some prooven engine with Chinese Mmos using it !
And it has lot of features like Streaming, big terrain management in the editor etc ... just read the featuer page.

For bugs , all Indie engiens have bugs here or here !
Now the question is : are the devs fixing them ?

I don't say it is best than Unity or better price.
But well for an indie Lonewolf ready to produce a title 150$ is not that expensive compared to Unity Pro or UniEngine indeed !

Well just my taste
I like A8 , and i use Esenthel , some people won't like it
and that's like that !

I have seen the C++ code and it's really clear and simple commands ! so why not !
Even more i use the free edition, only the day i would create some solid game to sell, i'll pay the 150$ !
This is a really good deal also. And the trial give you access to all functionnality (only source code is not accessible) !
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Some developper has bring cloth physics already in the engine, he said it was not hard at all !

Cloth Physix