BWP was the hardest for me. I don't know the first one I got was SL, and on that one every riff seemed to stand out as its own distinct riff, where on BWP they all seemed to mesh together. Harvest did nothing for me at first and at that point it was just too continuosly heavy at points. After a few weeks it began to grow on me more. I loved MR from the first listen. With MAYH I went in expecting it to be extreemly inaccesable, so when it wasn't I was able to get into it quick. Orchid took a while. Deliverance and Damnation clicked right away, infact I liked Deliverance better at first listen then I do now.