Tijai wrote:

>> the render quality and speed is not bad..i like it...
>> the use of any hdr image is possible.. but no alpha output.. just "simple" jpgs...
>> (there is a "alphamask" button in rmb renderview...but it doesn´t work)

The Simlab guys have just enabled the alpha output for Composer 2.1 (free upgrade, actually they said on the forum that all 2.x versions will be free upgrades). Not available for download yet but looks like it will be soon.

They've also enabled ground shadow toggle and ground reflection.

http://www.simlabforum.com/viewtopic.php?f=12&t=100&p=386#p386

I'm pretty impressed with Simlab's support and I'm very happy I purchased Composer.