Build your own. You aren't getting much extra nowadays from commercial boards, considering the cost.
I picked up a DARTSLIVE 200-S, which runs about $170 on Amazon. It has really nice free scoring software for Android, IPAD, and Win10, which appears to be taken straight from their commercial boards, with a couple of omissions, and communicates via Bluetooth. I put an RGB LED strip and LED-Wiz inside to light up the ring under the numbers and used my LuminAudio Engine software to pulse colors based on the audio from the software (it only lights up when the sounds are being played, not when throwing.) Mine is on the wall with some decent PC speakers, dedicated monitor and a lighting unit around it, but you'd be hard pressed to differentiate a commercial machine if all of that was built into a decent cabinet. The only real difference is the the lack of pay-to-play, and you will need to take the board apart to remove broken tips. Simple to do, but it takes about 20 minutes if you need to do it. It probably wouldn't take too much to hack the PCB's if you wanted to move the 2 buttons out to a panel, but that's far from a necessity.
Very happy with mine.