Anyone here use Google SketchUp? Did you purchase the Pro version? Do you like it?

I'm thinking of purchasing SketchUp, but I' already confused with all the options. Basically all I want to do is 3D model some process engineering plants (pipes, valves, tanks, etc) so I can show the relevant people a simple 3D drawing/rotation. I notice, though, that the free version is limited in the types of files you can save things as and take to other systems. I notice also that it will only print single page drawings. Has anyone else had any experience with this program? Did it meet your needs/expectations? Advice would be much appreciated.