[quote name='davideleira' post='1280292' date='Jun 23 2011, 10:40 PM']What's the difference of Yamaha TRB1005 or TRB 5II? Well, another thing: I use 4 strings, and I dont need 5 strings for now, but in the future, who knows... When I tryed the Yamaha TRB1005, the 5 string was perfect, but I don't use it very much, but it doesn't bother me very much... Maybe it would be better the 5 string version?[/quote]
Basically the TRB 5II was the model made before the TRB1005, the TRB 5II are considered slightly better due to their pickups having a slight more depth to them.
Also the TRB 5II (along with the 4II and 6II) were made in Japan where the TRB1005 (and 1004, 1006) are made in China I believe.
To be honestly apart from a slight cosmetic change they are both excellent basses, both active both build like tanks and you should be able to get them both second hand for around the same price.
A TRB 5II in very good condition should cost around 400 to 450 Euros where a TRB1005 might cost you up to around 500 Euros.
I would go for the 5 string versions because they are much easier to find than the 4 string versions and plus you will get used to having that B string there and you will start to use it, didnt take me long to get used to it anyway lol
[b]EDIT:[/b] My bad the TRB1004/5/6 are made in China not Korea