Differences in Chess Clocks

Today from American Chess Equipment we go through the different levels of chess clocks.  We go thru from the basic quartz analog clock to the VTek300 Advanced chess clock.  We give you the benefits and drawbacks to each of the clocks to allow you, our customer, to make the most informed decisions possible on your purchase.  The Clocks we go through are:
1)  We Games Chess Clock with Delay
2)  Quartz Analog Chess Clock
3)  Bobby Fischer Chess Clock (DGT North American)
4)  DGT 3000
5)  VisualTek300 Advanced Chess Clock