I really don't recommend getting the GSR180, I own one and while it's totally ok bass for the price the pickups really aren't that great (at least if clank is what you want). I bought this one
http://www.thomann.de/fi/harley_benton_b_450_white_progressive_series.htm from Thomann a while a ago, and after some customization and proper setup it's much better sounding bass than my Ibanez and probably plays as well as basses that are twice as expensive or over.
The main problems were the finish (or lack of it really
), for example the tuning pegs weren't tightened properly and moved around a bit, the neck had a shitty feeling finish that I sanded off with a #400 grit sandpaper in less than five minutes. Other than that there were some sharp fret-ends but some filing or sanding took care of that. After I refinished the neck with gunstock oil (really easy thing to do, almost idiotproof and the feel is so great, the best thing is that it doesn't get really sticky even if your hands get a bit sweaty) and restringed it with some proper strings and filed the fret ends it sounds really good (the clank is real) and is also really nice to play too.
If you can handle those issues with yourself I definitely recommend getting that one and if not, get something better used than the GSR180. I can also share some audio clips if you want.