I will begin with a little disclaimer:
I do not like 6 string basses. They make my wrist hurt like hell and I do think that the top C string is unnecessary in almost all circumstances - go for a 5 string.
Now, that aside, I am not a huge fan of this bass. The construction is reasonably good (although the treble pot on mine has broken), and for the most part, the hardware seems reasonably high quality. The issue comes when you plug it in. The bass, to put it plainly, sounds rather cheap. There are numerous settings you can toggle to create a sound you like - however the problem arises when none of those sounds are that good. They either sound muffled and boomy or too thin.
I hold on to it as in all fairness it is one of the better 6 string basses for the price (a little under £350) and who knows? That top C string may come in handy one day or another. However, for any potential purchasers, I would recommend either spending a little more money on a better 6 string alternative, or perhaps just get a 5 string instead.
Thanks for your time.