ICONS was the first of the prop companies to make sabers. Although they list 10,000, they made much less than that for the Luke, Obi, and Vader sabers. However, ICONS sabers are known to have poor construction, breaking apart quite easily and are often inaccurate.
In comparison, Master Replica sabers are all quite good from a consumer perspective. The sabers are all in pretty good quality and the cases to hold the sabers are quite nice as well as the acrylic cases. There are some inaccuracies such as the ANH Obi having the wrong emitter and other small intricacies but the Luke V2 saber is great. Lucas himself has a Master Replicas version of the Obi Wan ANH weathered saber which is a work of art (although incredibly hard to find) as a testament to their quality. From a prop collector perspective, they are inaccurate and possibly overrated but from a collector perspective or someone who is a fan of the movies and just wants something for display, Master Replicas are quite good. Also note that Master Replicas made two versions of the Luke ANH saber, a regular one and a Elite version that is made with higher quality materials. I heard its not really worth it to spring for the Elite version for the ANH saber (the ROTJ on the other hand is considered one of the three treasures of MR in addition to the Obi ANH and the falcon).
However, if you want the most accurate saber, you can't go wrong with a graflex. There is a distinct history and feel you gain when you have a prop made from original parts that just cant be replicated by a MR or Icons saber and by researching the prop yourself, you learn all about the nitpicks, flaws and intricacies that just help you appreciate the prop so much more. Finding the parts is half the fun and the dents and natural weathering give your saber a look of authenticity that just cant be replicated or reproduced in a sense. If you need help building, the experts in the RPF can and will help. Resale value, an MR or Icons will probably sell for more but a real parts just cant be beat. Its art that really is something you appreciate as a fan of both the movies and the prop.
