Yonex Vintage Rackets

Hi guys,
Do you collect any Yonex vintage rackets? Care to share some of your recollections/experiences about these rackets?
Woodies
B1000 Queen Heart
B2000 King Dia
B3000 Collegiate
B4000 Collogiate Deluxe
B5000 Five Ace
B6000 Five Ace Deluxe
B9000 Hy-Stainless (Introduced in 1976)
B9100 Slim Stainless (Introduced in 1976, has a slimer shaft which is as slim as the Blacken)
B9300 Carbonex 3 (Introduced in 1978, one of the very first Yonex rackets to have a carbon shaft)
Aluminium/Steel Frame
B4500 Alumina Spright
B5300 Alumina53
B5400 Alumina54
B5500 Alumina55
B7000 Alumina Ace
B8000 Alumina Hy-Power
B8100 Blacken (Introduced in 1976)
B8300 Carbonex 7 (Introduced in 1978, one of the very first Yonex rackets to have a carbon shaft)
B8500 Carbonex 8 (Introduced in 1979)
I wonder if some of you guys played with Blacken before. It was slimer and heavier than most rackets during the early 80s. It gives killer smashes.
And the Carbonex 8 of course. It was way too expensive for me back then but I had opportunites to borrow the use of these rackets from my friends.
Some pictures of the woodies can be found in the following website which is maintained by a Japanese sports teacher. The unidentified woodie with the pink paint job is the B9000.