The pin type power connectors worked well for us.
One suggestion: we first tried to align the holes in the table directly under the pins so the wire goes straight down. Found out quickly that doing so completely removed any flexibility in fine-tuning track position. The wires are like 16 gauge, and not very flexible.
So for all the rest, we drilled a hole about an inch to the outside of the ties, and bent over the pin wires at 90 degrees (careful not to crack the soldered connection) then dropped the wires there. You can still see an inch of black and red, but it's way easier to deal with.