Kingdom-man,
Without getting into the details of your mess with your solicitor, I think that the cut-price service provided by most solicitors is probably sufficient for more "straightforward" transactions that are going on all the time.
I asked a personal <lawyer> friend if his firm could represent us for our purchase, and got a quote of aroundabouts 4k, which we didn't take him up on. However, he was able to recommend a friend of his who was in the "cut-price" business, who offered 990 plus outlay plus VAT. While I'm sure a better deal could be done, I was happy with this. When I queried my mate about how they could do it for so much cheaper, he said they used the low introductory rate to build up a relationship with the client and hopefully ply for future business.
As far as I'm concerned, the lower the cost the better, <within reason>. I find that a good attitude to take is that if you don't know how someone makes their money, you need to find out - to satisfy the <within reason> bit. Unfortunatley, I can't see any justification for the big fees that some lawyers are charging for what appears to be a relatively straightforward transaction in most cases.