Sencore CR31A or B&K 470?

[radiotvnut]

I'd go for the 470. Both are nice models; but, I think the Sencore is old enough to still use "atomic blast" rejuvenation and it may not be able to check newer tubes. Of course, if you don't plan to rejuvenate tubes or check newer tubes; then, it should serve you well.

I've been using a B&K 470 for close to 20 years and it will test most any tube, except the early electrostatic deflection B&W tubes, made from the early days of post-war TV until the end of the CRT era. The rejuvenate function is also fairly easy on CRT's and I've saved more CRT's that I care to try and remember with my B&K.

I think the Sencore has an HV probe and may have some other features; so, you might do good to get both of them, if you can get them for the right price.