Can’t go wrong with the Niche. It’s a great workflow, built like a tank, and looks good in a kitchen. I do own one, so my recommendation comes with owner bias, but I’ve been very pleased with it.
Don’t underestimate the value of single dosing for home use. Leaving beans out in a hopper accelerates their ageing. Also, you might only use one coffee now, but as you go down the rabbit hole you might want more flexibility. The ability to switch to decaf is also very useful.
I haven’t tried the solo, but from what I’ve read they seem fine, but a bit more faff. The fact the niche has been popular for so long is a testament to its quality.