If you are looking for the elite in regards to FUE and appropriate hairline design, angulation, density whilst managing your donor accordingly considering the potential for future loss, you must be careful how you proceed with your choice of surgeon.
Even if you get apparently good results now, as hair loss continues will your donor have been correctly evaluated in order to successfully address this in the future. It is essential to think long term. This is why your choice of physician is essential.
In regards to the negative reviews of Dr Cole, everybody should conduct their own research, speak to patients and get a fuller understanding of their Dr. Unfortunately, just like in any profession, if you have been doing the job for 15+ years you are inevitably going to have some less than optimally happy patients. Some may be completely justified and others not so much.
With any Dr, you must feel confident in your choice and have complete trust in them, their approach, their experience, their method and their team. This is surgery, and things can go wrong. That is why you must have a certified and experienced Dr to deal with such possibilities. Not like many clinics in various countries, namely Turkey.
If your Dr has 50 positive reviews, and 1 negative, then research the negative of course, but it is important that you remain realistic in understanding this proportion. A lesser Dr with less experience and less patients and therefore most probably less results and reviews posted, may not have that 1 negative review. But they have also most likely had 1/10th of the patients and won't have so many positive results either.
I understand that every patient is financially conscious to some degree. It would be crazy not to be. But the financial aspect if only one factor and shouldn't be the main decision maker. Choose a Dr who you have trust in, who has the experience and reputation to back up his claims in regards to what he can achieve. Otherwise you may well end up spending significantly more on repair work and further surgeries and this is not even considering the emotional turmoil that you may experience.
Wishing you all the best in your choice of surgeon.