Try searching the appliance forum. I'm very happy with my 36" Thermador Pro Harmony range and dishwasher and LG counter depth French door fridge, fwiw, but you'll find plenty of strong opinions on other brands too.

Unfortunately, a lot of the deals for buying all 3 mean getting all the same brand, and since all manufacturers don't do all things equally...or most are good at one thing, but not the others, this is rarely the best choice for someone. What's better is to choose each by it's performance, reliability, and suitability to your particular needs than by one name. Everyone will have different views. If I was in your shoes right now, I'd start by checking out the following:

DW: Bosch or Miele (I went with Bosch to save money and am happy)

Fridge: Samsung, Bosch

Range: (Assuming you want performance and power) Wolf, BlueStar, Capital Precision, DCS, Monogram

Best wishes...and I second the idea that the appliance forum can be a tremendous help in your decision-making.