GKN, LOEBRO, SPIDAN CV JOINTS, DRIVESHAFTS

Does anyone have a clue on where i can purchase a pair of inner cv joints of the GKN, LOEBRO, or SPIDAN brands..?

im finding it a right ballache of a job trying to find a pair.

outer cv joints are pretty easy to source but the inners.. my god wtf!

ive purchased from j&r cv joints in the past but was not impressed as there cv's caused too much vibration, and to be honest i dont trust any other aftermarket brands out there.

However i have just come across a brand called shaftec and would like to know if anyone has had any experience with this brand..?

Any other trusted brands.?