They both make non adjustable smaller block planes -- the LN 102 and the LV apron and larger adjustable mouth planes. The adjustable mouth LN 60 1/2 is smaller and handier than the LV version. So it depends on whether you want a slightly larger block plane: the LV; or a little smaller: the LN. I have the LN 60 1/2 and it is superb. Although it is small is is quite a bit heavier than a Stanley. LV also has some new designs of block planes that are pricey and unusual looking. Another difference is that the LV have a Norris adjuster which controls the lateral and depth -- the LN blocks have a depth adjuster and you simply move the blade by hand for the lateral adjustment. I would see what you feel fits your hand best. Both are fine companies who will stand behind their products. LN has free events where you can try their products and get advise -- look on their website to see if there is one coming to your area.