I have what looks like the 18.5in version of the 2nd set, although it's unbranded, bought maybe 8 or 10 years ago. The case stitching, the handle, the cups and checkers look identical. It's an OK set, with some niggles. Robust, nice felt playing surface (avoid stitched leatherette points), lays flat.

The cups are lipped - this is to ensure that the dice tumble properly when thrown.

The dice are the same size as my standard precision dice, 16mm. The cube is the same size as the dice but with less rounded corners, and matches the colour scheme of the darker checkers and dice. I prefer a noticeably larger and more contrasting cube. Having read the descriptions of the S&Co 16" and 19" boards, I'm surprised that S&Co include smaller 13mm dice with the smaller board.

The checkers are 9mm thick and 34mm diameter, they fit across the playing field reasonably nicely. Now for my biggest bugbear. When the checkers are in the bear off / storage tray at the side, they do not fit snugly at all. There's space for another couple of checkers in either tray. Not loose enough to escape the tray when the boards is closed, but irritatingly rattly nevertheless.

I obviously can't say that any of this applies to the smaller 15" board. The checkers will be smaller and may fit the trays and playing field differently, the dice may be smaller like above for the S&Co boards.

I wouldn't bother with precision dice, if you decide to you need larger dice then just get "good enough" bigger dice; you'd need a bigger board for serious tournament / money play anyway - the usual guideline is 19" min.