I'm sure this has been answered in some way in the past, but I would like to re-ask the question.

We're in the market for a new roaster.  We roast on a 5 kilo Ambex now, but we're looking to get a new roaster.  Ambex is fine and gets the job done, but we are looking for a roaster with better quality and better access to service.  Based on conversations and what we have read, we would like either a 12 kilo Diedrich or Probat.

We have no roasting experience on either, but are drawn to their quality, reputation, ability to offer service and resale value.

Assuming both of those are those items are all the same (Probat probably has slightly better resale value).  Why should we pick one over the other.  Our concern with Diedrich is their IR burners and how they would differ from Ambex's direct flame, and the learning curve around that.  Probat would be direct flame like we're used to, but is an extra $11K worth it.  Do they both have the capability of delivering great coffee, it's just a preference?  

Thanks in advance!