I really have not used the Greenlight SiC nail but 5 or 6 times so mine is still pretty fresh and each time I used it with an adapter through a regular sized bubbler rather than the little ones they send. I really didn't notice an off taste.
I used Greenlight's TC Port about 6 months ago. I found the SiC insert to have an off taste, but perhaps they've improved in the meantime. When using the TC-Port I tended to only use the titanium and quartz dishes.
I have looked into the TA Siaonara recently but ended up deciding to wait a little longer to see what comes out. Is the Ti bucket coil less? How is splatter and efficiency? Is the bucket tall by chance?
So the Saionara Ti Buckets are heated by a donut coil. But the newest version is "sealed" so there's no chance of leaking down onto the donut coil itself.
I experience very little splatter on my Top Airflow Sai. Less than most wax pens.
The efficiency is great, but it works best with small amounts. There is the larger "Sequoia" atomizer for bigger dabs. I just don't find this necessary.
I wouldn't call the bucket "tall", but it's tall enough that nothing comes "bubbling" out, even when I load more than I should. It's definitely wider than the Source bucket I had tried previously.
Each Ti Bucket costs $12 I think. They last a long time too. Haven't blown one out yet.