Are KT88 Gold Lions Amp Tubes dependable

I have run GL KT88's in my amps for years and have had no problems with them.

The early runs were not as good but they seem to have got it down now. I love this tube.

I found them to be less than reliable in the VTL ST-150 I had at the time. I had two of eight go bad within a year. I did love the sound though. In the end I couldn't afford to replace them and switched back to Tung Sol 6550s. They were much more reliable for me and my amp.
Cheers,
Jim