I have the Black tech and love it. Warm water, cold water, whatever, it works well. Easy to clean too.
The larger size I find as an advantage as its in-water weight is very low. Some regs I find I need to hold in my mouth, this one sits nicely.
Easy to clean.
Hold tune well.
I have probably 800+ dives on mine and the coating has held up well. It may have faded a bit (I'd need to compare it to a new one to confirm) but it is very resistant to wear and tear.
Thank you very much for your feedback! Appreciate it