I had to replace my TackTicks (which I lost by leaving at the docks at TISC--if anyone sees a SpeedMaster & RaceMaster pop up somewhere, maybe they are mine?)

US prices are really steep, but I found much better prices out of the UK, as well as good service. I ordered from www.seamarknunn.co.uk. Prices are about 2/3rds US prices, though shipping is a bit more expensive.

BTW, I love my TackTicks. The SpeedMaster works with the transducers from the flaky KVH instruments the boat came with, and I seriously abused the same RaceMaster in 3 Worrell 1000s and it showed no wear at all. And now I don't need to carry a battery during day-time races. All-in-all I removed 40lbs of electronics off my boat by going to the TackTicks.

--brendan