Excellent! John Berkey... I remember his stuff! Love those curves. Chris Foss, you probably have his Hardware book. I also like RonCobb and Ralph McQuarrie, Joe Johnston, and so on. Lots of great sci fi concept artists.
You've just listed my favourites, more or less. Andy Probert, John Eaves and Syd Mead as well. I'm sure there are many equally good younger artists, but aside from ones who are well established like Ryan Church and Alex Jaeger, I'm not very familiar with their work yet. It's all fantastic inspiration for the budding artist though.