I'm extremely tempted to buy it... i too have downloaded the trial.  However i find it is extremely draining on my computer, so for any sort of sanity while processing photos i would have to upgrade.  Just make sure the things like adjustment brush work smoothly on your system. If they do i would probably recommend getting it - the filing/import system looks great (something i need to do manually and always cant be bothered to so now i have a cluttered filing system where i cant find anything). 

The other benefit i see in using it as your primary editing system is that you dont get too bogged down in photoshopping and "effects"... you can produce clean and great looking images in the same program you use to file away your photos.  It's like a photographers Bridge and Photoshop moulded into one neat package... of course anything "advanced" you want to do will have to go to photoshop, but hopefully you wont have to if the shot is good enough for just colour corrections and minor enhancement

Tho if you have a good filing system and are adept with photoshop i dont think the £200 price tag is something to take lightly...

"In every colour, there's the light.
In every stone sleeps a crystal.
Remember the Shaman, when he used to say:
Man is the dream of the Dolphin"

Rich Meadows Photography