I'm going on season 3 (or 4 lol) with my Aqua-Traxx drip tape.. 10psi regulation, 155 mesh filter.. And you can't beat the price at 98 bucks for 1,000 ft!
http://www.dripworks.com/product/Q_TA15
Edit: Although I will say, I'm not particularly happy with the surface of the soil.. The mulches don't get very moist and it slows their decomposition, so every now and then I'll go in there with the hose and give the surface a good wetting - I unfortunately can't do it when the tomatoes are in the ground (I don't wet my plants unless it's with compost tea) so it leaves me wondering if there is a better option that is more effective at wetting the entire surface; without splashing of course.. Guess I can't have my cake and eat it too....? Then I don't even want to see the cake! haha