If I were going to stick with Linn and my options were those detailed in the OP, I would choose the Kolektor and the LK140. This is from having demoed the Wakonda, LK85 and LK140 with Keilidhs both active and passive, back when they were new... it took several visits to the store to hear all the possible combinations.
Particularly interesting was a single LK140 versus two LK85s in passive biamp configuration. The LK140 won for its energy and drive, a big difference over the smaller amps, with no important sacrifices. Active LK85s were another story, but still lesser amps in the drive department and frankly, I decided it made sense to start higher up the line.
I have not heard the Kolektor--eventually I went in a different direction from Linn entirely--but the dealer recommended it as a preamp over anything I had heard up to then.
Particularly interesting was a single LK140 versus two LK85s in passive biamp configuration. The LK140 won for its energy and drive, a big difference over the smaller amps, with no important sacrifices. Active LK85s were another story, but still lesser amps in the drive department and frankly, I decided it made sense to start higher up the line.
I have not heard the Kolektor--eventually I went in a different direction from Linn entirely--but the dealer recommended it as a preamp over anything I had heard up to then.