Linn Majik biamp question

I have an older Linn Majik, I think it was made in the early 90's and I'm thinking about adding a second amp to biamp. Since my Majik is a little older should I use a LK100, a LK85 or does it really matter. I don't think Linn was making the LK85 when my amp was made and I'm wondering if it would match the LK100 better. Thanks.
Either amp will work fine. It boils down to availability/price of units you may find for sale.
Good Luck!
I do not think production date would matter? I like LK85 over Lk100. 100 although more powerful, is more 'drier' sounding unit. Majik is great unit that can drive bass itself very succesfuly.