Hi Nick, i feel it is yes. Hard to be subjective though as the car was already quick (in my eyes). However, something i did notice when i took it out on that small test-run was how it definitely felt quicker and smoother, ie. i put the foot down a bit and the car just went!! I notice too that whereas in the past, the car didn't like 'taking off' until the temperature hit 90, but now it wants to go earlier; i still wait of course until up to temperature!!
It could be me, but it seems a bit more 'revvy' now too, and the exhaust note is a bit more prevalent, even moreso than what it was!! So, in direct response to your question, Yes, it's most definitely worth it!!
Now, to upgrade intercooler, or not!!??