Hej, hej hayseed,
here I found something for you:
http://www.thomann.de/gb/casio_lk_280.htm
CASIO LK-280
Casio LK-280 Keyboard - 61 illuminated keys with
touch response, 48-note polyphony, 6000 sounds, 180 styles, 110 internal songs, 3-level learning system, transpose function, LCD display, metronome, internal sampler 10sek record, internal thomann 6 tracks recorder,
SD or SDHC card reader 32 GB, SMF player,
microphone input,
USB MIDI, sustain pedal input, headphone/line output, 2x 2.5W speakers, powered via batteries or incl. power supply (AD-E95100L). Dimensions: 948 x 350 x 103mm.
Weight: 4,5kg = 10 lb
And here ar some Midi Controller Keyboards without own sounds but very lightweighted:
http://www.sweetwater.com/store/detail/Keystation61es
M-Audio Keystation 61es
Item ID: Keystation61es
61 Semi-Weighted Key, Velocity Sensitive Self-powered USB MIDI Keyboard Controller
11 lbs
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http://www.sweetwater.com/store/detail/Axiom49mk2
M-Audio Axiom 49
Item ID: Axiom49mk2
Based on 2 reviews
49-key USB MIDI Controller with Semi-weighted Action, DirectLink Mode for Automatic DAW Mapping, Pitch and Mod Wheels, 8 Trigger Pads, 8 Encoders, 9 Sliders, and Transport Controls
6,9 lbs
And here you can look yourself:
http://www.sweetwater.com/shop/keybo...d-controllers/
Torbjörn