Octane Q37e Review

I have had the Octane Q37e for 1 1/2 years and use it regularly.  I like the programs and operation very much.  It is very smooth and quiet except: I am on my 2nd machine.  The first one had a rubbing/grinding noise.  I had a repair man out 3 times before it was fixed.  The first guy sanded down part of the front shell to try to eliminate the noise.  The last guy was an engineer from the company and he found a bent bolt.  Replaced it and it worked good for a while.  Then more noise.  I had the repair service out again and they couldn't find any thing wrong (again - and in effect said I was a complainer and nothing was wrong with the machine).  I had purchased the extended warranty and had a great deal of trouble getting them to fix the problem so they did eventually replace it - thanks to some very hard work my the manager of the store.  The one I have now is 2 weeks old and has a VERY loud squeel - like when the breaks on your car are bad.  I really like the machine and the store where I bought it, but I need one that will work right and a repair man that knows his product.