... just for fun, i took a round to weigh my guitars, i havent done that before. It turned out that this telecaster is the heaviest instrument around here. If anyone is interested, from light to heavy, and the instruments mentioned in this thread is the Diamondback and the Telecaster:

kg lbs
Xaviere LP: 3,1 6,8
Amistar res. 3,35 7,4
Ibanez RG505 3,45 7,6
Diamondback 3,65 8,05
Stratocaster 3,85 8,5
Telecaster 4,05 8,9

Edit: Funny to try insert a table.. well it IS readable with some creativity!