So my psychiatrist just switched me from my single AM “starter dose” 10mg IR to a 15mg XR capsule (which seems like a downgrade to me, but we’ll see). My local CVS tells me that they can’t get Teva branded XR and that my choices were Impax and Activis. I went with the Impax so I’ll let you know how it goes, but it’ll be my only experience with the XR thus far so it won’t be an apples-to-apples comparison. Fingers crossed.