I scanned approx 1000 lead sheets to my laptop.I bought a Visioneer One Touch at Office Max for around $100.I bought an IBM Thinkpad at U-Bid for around $600 that had come off lease. The reason I bought the One Touch is that it was bundled with Paperport and is excellent in organizing my music. It has a search facility better than I have ever seen.I also use the laptop for midi tracks using MidiNotate,an excellent program,downloaded for about $43. Everytime a midi is called up it notates all parts which you can tell it to prepare a lead sheet. Very good and easy.
If you need anymore info,you can email me direct as I have done the whole thing and am now travelling paperless.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact