Well i just can repeat myself somehow. I used Unity on my Mac and i can't get why people are so hyped about it. It might be the "personal taste" but for me it's, well, a nice engine but there are better engines out there.

Especially when you compare the prices to other engines, like (i feel the A7 snipers aiming at me right now) torque, you might realize that there IS really a better solution.

You don't need a mac, you can publish to PC, Mac, Linux, XBox360, iPhone or Wii (depending on the engines) and the price range goes from 100$ to 500$ (the iPhone version).

How many of you have even tested the engine? The workflow, the script languages, assets managing, etc.

Dunno much about Shiva but its sounds nice too.

I think there are some better solution and i hope you won't get tricked by this "Unity" hype.

Just my opinion.