The ball bearing Vertex is just a little cheaper than the Llambrich. Your link isn't working for me.Apologies, you did ask for 3/4" capacity. What about Vertex 19BXH? Have a look:
I ordered a few times from Rotagrip and they are great. S&H is a bit more from the UK than US suppliers but they have better pricing on Vertex and normally you save on the VAT (UK is 20%).