I've been reading up on chain replacement for a while and have finally decided on the RK GB520GXW for $90. I recently changed out my front sprocket to an XRR Renthal 14 tooth so now I need to replace the rear sprocket when I put on the new chain. I want to stay with a 45 tooth for various reasons and need advice on which brand of rear sprocket I should go for. I found a JT sprocket (http://www.amazon.com/JT-Sprockets-JTR301-45-Steel-Sprocket/dp/B0068O5LF6/) but the price is super cheap and that concerns me. I don't want to go with an awesome chain and then have the weak link be the sprocket. Does anyone have experience with this JT rear sprocket? Any others I should consider or avoid? I saw a Supersprox on Amazon for around $90 but not sure they are worth it. I'd like to find a middle ground around $50 but still a good value. Any suggestions?