What sort of lighting do some of you use for reviewing prints? I'm considering whether I should get something like the solux lighting as on this page: http://www.solux.net/cgi-bin/tlistore/info...r-proofing.htmlAt what point do you think in a photographer's progress/education would you think the most benefit from lighting would be worth the investment? i.e. Should I get these or just a few more lamps for my "dark" room from goodwill? Thanks in advance for your feedback.