We will just have to agree to disagree, because I disagree.
Sure, bargain basement motherboards will cut out the extras, so you do lose on features when talking about $70 motherboards, but what does a $230 motherboard give you in real world non-marketing terms that a $150 motherboard won't?
You can justify the extra cost by saying that you can afford it and you want it, but I don't see any "valid technical reasons" that are good justification once you go above a certain point (diminishing returns).