I think T5HO will be the most similar type of light to what you are using now... I didn't know you are using PC? What fixture? You've got great results from it anyway...
I am very happy with my Aquaticlife 4 bulb fixture. It has 2 10k, 2 actinic and 2 led, all on one digital timer, one power cord. I love it. I highly recommend it. I've got some great growth and some pretty decent colors I think.