It happens that Murmansk formulated :
I've got one but it's years old - has the technology improved and has anyone
got any recommendations?

Mine is a combined unit - cable pipe, live wire, stud finder and quite
old. A friend bought the recent Lidl one on offer and I had quick
chance to have a play...

It included all of the above, plus an ultrasonic distance measure. It
seemed a bit more capable, but maybe not worth the expense as I had one
already.