I agree that they are pretty good, especially in Sketchup, yet they seem to suffer some in the conversion process. Here are my recommendations for substitution in the main pack: altbeast - Blank marquee, wood cabinet arabian - Inverted right-side art arkanoid - One side black, other wood armora - Missing front/back, inverted side art assault - Blank marquee asteroid - Marquee reversed astrob - Missing X file from Gozer conversion baddudes - Missing marquee and bezel simpsons - Missing X file from Gozer conversion taxidrvr - Remove - displays pinball machine tetris - Gozer file has Original marquee and better display These are the few instances where I found that the Gozer file conversions were superior to those originally provided in the pack HK initially put together. I did some comparisons Gozer's files vs HK's files where there were noticeable defects (i.e. inverted artwork, missing panels, etc.) and found that, in most cases, they possessed the same defects upon conversion to X files. This leads me to believe that he was either the original creator of some of the files or collected them from elsewhere. Not that it should matter as it has helped to fill in some much needed holes in the collection.