#5
i think a new amp would do more good to your tone at the moment
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#6
+1 to the new amp. i hate to turn this to a new amp thread but an new amp should also be on option.
seeing you have an Ibanez TBX15, an amp would make a big difference to your tone. you will notice a little change if you slap in new pickups but still use the amp.

care to add more details like what dont you like about your current tone, what tone you are after?
Ibanez RG321MH (Air Classic/Tone Zone)
Fernandes Telecaster (Twang King/stock bridge pickup)
Blackstar HT-20 (Scumback 55 speaker/ Tung Sol tubes)
TC Electronic Nova Repeater
Lava Cables Clear Connect, Soar and Mini ELC
#9
+1 to new amp idea. A good amp will improve your tone tenfold over new pickups.