The topic of Dual Fuel or All Gas ranges has been discussed a lot on the Appliances Forum. Do a search there. But in any case, the idea that an electric oven is better for baking is a holdover from older gas ovens that did not have the insulation, temperature control and precise calibration of today's gas ovens. It is no longer the case, except perhaps (only perhaps) if you are a professional pastry chef. Having said that, I know a professional chef who only would have an all gas range in his home kitchen. Also, gas ovens are better for broiling and roasting meats.

I think the significant upcharge for a dual fuel range over an all gas range is not worth it, just MHO. Also, if you do not have the electric wiring already for a dual fuel range, remember to include the cost of the electrician for that wiring in your budget. If you like the looks and features of a dual fuel range, you should get it, but don't expect that your baking is going to come out better.

Some all gas ranges do not have self-cleaning (but many do), so if self-cleaning is important to you, check the model you are looking at to make sure it has self-cleaning. (My all gas range has self-cleaning, and I never use it. Can't stand the heat and the burning smell.)

Regarding the Viking colors, I think that is one of the biggest reasons people choose a Viking. The colors look great. Viking ranges have had their reliability problems, and you can do a search on the Appliances forum about that. Then again, just about EVERY brand range has had its reliability problems.

i debated the same things when shopping for my range. i ended up going with all gas, could not justify the up charge for the dual fuel for something that really did not matter too much to me. i initially was planning on viking but due to reliability data went with wolf instead. did not need the exterior color requirement. good luck!