Speaking of the Explorer, here are two suggestions to any possible future DCS company. Firstly, include the power supply (wall wart) for the Explorer in the purchase, as was true for MTH sets, but not for the separate sale Explorer. Or at least specify a few inexpensive power supplies in the 10-20 dollar range. Suggesting the Z1000 is a non-starter and borders on bizarre in terms of both overkill and expense.
Secondly, either include printed instructions with the device, or the web address where you can download the .pdf instructions. I've never previously purchased an electronic device that failed to include at least "quick start" type directions. Don't cheap out or stay half-baked going forward.