You’ll find a huge similarity between the JBL GTi series and the above-described Infinity speakers. So much so that the only thing really worth mentioning about the JBL speakers is that due to their crossover design and slight midwoofer and tweeter difference they have a different sound. I classify the Infinity system as a little smoother and the JBL one as a little more raw. Depending upon your listening choices and style it is worth listening to both and making a decision. If you can’t and you are looking for raw, loud, and good performance the JBL GTi series should be your choice.
For the performance difference I put the JBL speakers third in my Best of the Rest choices.