I realize this is asking for trouble, but I've gotten really good at that so why fight it?

At the LN Hand Tool Event over the weekend I came to the conclusion that the planes I have (inherited Craftsman smoother and wooden jointer) just aren't good enough. The mouth on the wooden 1 is too big and the frog on the Craftsman doesn't work properly with the Hock chipbreaker I have. The smallest shavings I'm able to get are about 1/8" and very inconsistent. Fortunately, LOML appreciates quality tools for performing quality work (she has a sewing machine that cost $1800). A jack plane is at the top of my shopping list, but I'm not sure if I should go all out and get the LN, or save some cash and get an old Stanley.

I've seen some Bedrock #5 planes around for about 1/2 the price of a LN. Assuming decent condition will I notice a big difference, or even on a Bailey?

Thanks.