I used to own a waconda and a Lk285 w/spark-- out board power supply. It was very good for the money. The kairn is a considerable better pre so if you can I would get it. My LK285 and Spark are still at my dealers for sale. Dude they where the best linn had to offer for a long time and will kill anything you are considering now IMHO. Call my dealer they will make you a great deal. The Sound Environment 402-423-3737 ask for Gayle. I sold them and changed to tubes, but the linn is a great set, go for it.
Mike
Mike