I also had two quotes, very different, I wanted a rewire so either safe for mother when she returned home, or in a fit state to rent out if she didn't. With the first I said what I must have done, and what I would like, in hind sight a mistake as the quote included all the bits I would like and so bumped up the price, the second was a more basic rewire. I also had time limitations had to be complete before mothers time in a care home was completed. I was spending in essence some one else's money and was well aware of this, so I went for cheap option, as to if this was good or bad is a personal thing.
However sockets down stairs were at disable height, sockets upstairs in the main just above skirting, which was what I asked for but not what I wanted, the electrician was aware I was making good after he had finished, he was trying to help me, so making the amount of re-plastering required the minimum he could, he did very well with that, but as a result the sockets were lower than wanted.
It was nothing to do with the electricians qualifications as to what I got, it was down to me telling the person pricing the job what I wanted. My sister would often say with computer software design, she would make what the customer asked for, not what the customer wanted, and these were often two very different things. It is the same with every trade, the hard bit is working out what you are asking for, it is not the skill of the tradesman in doing his job, it is down to his skill at working out what you want.