Im sure most of you probably already know this, but i thought id post it up for all the noobs like me. Its comonly assumed that titanium is lighter than aluminum. Titanium is the best strength to weight ratio though. Check out how much heavier titanium is than aluminum: http://mojobob.com/roleplay/weight_chart.html
I alos found somewhere else that carbon is almost half the weight of alu. Interesting stuff =)
You got a very beasty deal! Im not sure what they would go for new, but im sure at least double that. Ill buy those zoo bars off you for 10 quid =P lol just kidding.
Im trying to decide between the same 2 frames, I was leaning towards the lynx, cause its lighter, cheaper, and i can get it from the U.S., but i like the ice better for everything else. tough choice. ill keep an eye on this topic =)