Adobe Photoshop or Elements (1 Viewer)

I currently use Adobe Photoshop Elements V.1, and am gradually getting to grips with it. My recent move into digiscoping means I will be doing different types of image manipulation, and I wonder whether a software upgrade is a good Idea.
Elements V.2 would be the cheap option, but I will can get Photoshop V.6 on E-bay for a similar price, and upgrade it later.
Is it wise for me to move into the big world of full Photoshop for digiscope images?

I currently use Adobe Photoshop Elements 2 in conjunction with a Minolta Dimage Scan Elite 5400 DPI scanner and I am thrilled with the results. The functionality of Elements 2 is perfect for my use in scanning 35mm transparencies and negatives. I also started off with version 1.0. Note I also own Photoshop 6.0 but prefer Elements for my photographic work.

Malcolm,I think most people find Elements 2.0 is perfectly adequate for all the manipulation required.It is an excellent prog.