The Ikea kitchen offered us the best price-performance ratio. We also had time for the assembly. Although it took quite a long time (about 8 days), we hadn't expected that, but it was neither tricky nor tedious.
However, 18 cabinets with interiors simply take their time, and we would choose an Ikea kitchen again anytime. Especially because of the price transparency (which we missed in the kitchen studios).
In terms of electrical appliances, we chose the stove and refrigerator from Ikea. The oven and microwave are from Neff, and the dishwasher is from Siemens.