I'm a bit perturbed with LightCrafts atm. Several rather annoying bugs exist in the 3.5 release:
1. Batch RAW conversion produces progressively shrunken jpegs if you specify a size limit (e.g. 2048/1536/1024 pixels max)
2. Memory leak that eats your RAM after working with several images.
3. It will not handle DNG or PEF images from the K20D.
A quick search around their forums and you'll see quite a few folks raising these issues, beginning mid-April '08, and thus far I am unaware of any response coming from LightCrafts on if/when a patch will be available.
So while the workflow and tools of this product are great, they've got a long way to go on support and QA. So my free advice is to save
all your pennies, not just 20% of them, until they put out a patch.