First of all, I like to ask if disk jammed and reset problem common to most
CD changers.

I have a Sony CD receiver CR-C610, probably 5 to 6 years old already, but
the sound is very good.  I used to have a 10 disc Sony CD changer, which got
jammed up in the course of changing disks.  Failing to reset it, I bought a
new Sony 6 CD changer that plays CD-R as well, which worked well for a
little over a year, and started jamming up and require resetting again.  The
first time it was fixed by unplugging the power to the changer and reset the
receiver.  But now for the second time, unplugging and resetting do not
work.  When I ask the shop keeper where I bought the changer, he says it is
a common problem for CD changers, and he actually advise customers against
getting CD changers, and buy front loading CD player.

Is the shop keeper right, that jamming up is a common problem for CD
changers, or is it my CD receiver that has the problem?  I don't want to
spend the money to have the CD changer fixed but finding it jammed again a
week later.  If so, I would rather get a front load CD player instead.