Wow - I can't believe how such a simple honest question turned into what seems like a huge political debate.......you guys aren't doing justice to Comanche who seeks some honest feedback, not off-topic bickering!
Anyway, for what it's worth, I have lived in both Doha and Dubai.
Dubai is big and busy and modern and almost western!
Doha is smaller, quieter, still developing and, for me, retains more Arabic character than Dubai does. There is still plenty to do in Doha and I wouldn't describe it at all as the most boring place on earth.
True, many people living in Doha do escape to Dubai for the odd long weekend. However, many people living in Dubai also make it across to Doha for the same reason.
I personally recommend Doha, and feel that it will develop over the next 5-7 years into a medium sized, well appointed city.
Dubai has already surpassed that, and retains hardly any character at all.
The question you must also consider is your employment options. I can add nothing further to the extensive posts that have already been seen here on Pprune on both EK and QR.
Both have positives and negatives. EK is not always the sleek outfit that they appear on the outside. Neither is QR as mediocre as everyone thinks.
(What about the new Gulf Air?)