Halo's Triton Tank system is greater than the sum of it's parts.
As stevegmu said, Halo engineered this e-cig to work extremely well. The ego-style batteries are top-notch, and the 650 Mah ones last far longer than they should. The T2-style clearomizers do not leak, and I've never had a burnt taste to one. The flavor is very good with them as well. I have one currently loaded with some Heather Heavenly Vapes Legend, and the flavor and vapor are just a tad lower than the protank, but the flavor doesn't fade over prolonged use.
Certainly, this set is a bit more expensive and you can find cheaper. But if you want quality goods, and a quality vape, The Triton Tank is a must have. Halo will also be releasing the Triton Variable Voltage battery within the next few weeks, which will add more value to this exceptional set.
Check out Spinfuel.com. They did a review of the Triton Tank upon release, and last week issued a follow-up article to check the durability and quality of the product. The reviews are still glowing.