I find the Freya+ quite sturdy. It is said that the circuit board was made thicker compared to the original Freya. I believe it. The sockets seem to grip like any others I have had.
In any event, if the sockets are a concern you can use socket extenders and avoid the issue entirely.
As for tubes, the Freya+ used to ship with Tung-Sol tubes (which is what they were reviewed with) but now ships with cheaper JJ tubes.
I have rolled and find the SQ to respond very well. Currently using Sylvania chrome domes in the gain positions with excellent results. Especially if you prefer (or like me must have) balanced outs the Freyas do very well at 1/5 the cost of the Rogue, for ex. But you will probably have to roll to see exactly what it can do.
In any event, if the sockets are a concern you can use socket extenders and avoid the issue entirely.
As for tubes, the Freya+ used to ship with Tung-Sol tubes (which is what they were reviewed with) but now ships with cheaper JJ tubes.
I have rolled and find the SQ to respond very well. Currently using Sylvania chrome domes in the gain positions with excellent results. Especially if you prefer (or like me must have) balanced outs the Freyas do very well at 1/5 the cost of the Rogue, for ex. But you will probably have to roll to see exactly what it can do.