Any big differences between the first triton and this second generation triton that I'm missing? I see the top refill now unscrews instead of pressed with an o-ring and lack of the useless drip tip airflow in the first triton. It obviously has more glass (easier to clean I guess) but actually holds less juice (3 ml vs 3.5 ml). A slightly shorter height difference. The bottom airflow slots looks about same. I also saw aspire now has 0.5 ohm clapton pre-made coils. Any real reason to upgrade from triton 1 to triton 2?