About the tubes. The J-tube is good as it is heavy tube – I like high effective mass arms. There are two straight tubes. One is for super light MM cartridges and another is normal one. This normal straight tube has a bug – the offset sluts on the headshell are cut a few degrees of the mark to hit proper overhanging. It might be easily corrected by angling the cartridge in the slots. It is a bit too light tube but still useable, particularly if you load it.