Chestnut,
I am going through the same thing you are, trying to decide which direction to go. I ordered one Japanese Chisel and I am going to look at the LN chisels at their open house in a few weeks.
I have a great set of chisels (Barr Cabinet Chisels) they were all gifted to me over a few years, the problem is when I chop and pair dovetails with them, they are very thick and bulky for such at times is a very delicate and precise task. I too want to get better at this, so I opted to try the Japanese first. I see Chris Becksvoort and others use the LN chisels, so I will give them a look and try as well.
Happy Shopping!
John