I didn't know that they weren't doing the tubes anymore. Doesn't make sense, like you, I use the tube just about every time.
I hesitated to spend out the dosh on Servisol the first time but have to say, it was money well spent. I would take a lot of persuading to try a different product now. Use it just about every day. Today it's already been used on a P bass and an old Pacifica that I'm servicing.