You should ask this question over at the Centroid website. They have a specific forum for acorn support. There are some very knowledgeable people there who can give you an answer. I do know that the acorn will support a turret. I have not done it yet and it's a bit over my head.
Like you I got frustrated with Mach 3. I installed an acorn and so far it has worked well. The quirks that I had with Mach 3 are gone. The reliability has been great. The acorn is not as versatile as Mach 3 but what it does it does reliably.