I own the Kit Fisto FX Lightsaber. i did a short review within a thread:
http://www.therpf.com/showthread.php?t=120820&page=2&p=1848554&viewfull=1#post1848554
I think the Kit Fisto FX with removable blade is very cool. Light and sounds work as described above. I have no other green FX blade to compare it with but it seems very bright even in a room full of daylight. It came with a covertec clip. It is not a replica of a real covertec clip but very similar and it does the job. It also has a plug to close off the emitter when the hilt is displayed bladeless. I do not know if Kit's saber had any differences from Mace's TPM saber but they they did include the two purple jewels located near the pommel. I always liked those purple jewels.
I tend not to be overly critical. I think the hilt looks well made and I am happy with the materials, details, and construction.
Here is my take on lightsaber collecting, and remember it is all based on personal preference:
I like FX hilts but it is not something I really feel the need to own. I prefer the static hilts because for the most part, they simply sit in my collection. The FX style sabers I own are all MR/Hasbro and a couple of Mara Jade (non-sound) lightsabers by Parks, since he is the original builder of that design. I have a Luke The Empire Strikes Back model because I have a Bespin Luke costume and I thought it might be cool to have a it to go with the costume when I wear it. The others I own are because I got a good deal or when they came out, i thought it was unique to the collection. In the case of the Kit saber, it was a nice replica and I could choose to display it as a static hilt if I like it.
Although I am not a a bit FX fan, I do understand think it is nice to have at least one in your collection, especially your first one since you most likely will be wanting to pic it up and swing it around a lot. However is my experience you tend to do that less and less as your collection grows. One of the things I noticed about my own collection, I don't bother much with handling the MR LE sabers. Mostly they are for show and I don't want to take them in and out of their cases. Mostly to save space, I have to stack the cases so getting to the hilts are a pain. I do handle the fan made ones more due to them not being in a case. As for my FX, I only turn on the blades when i am taking photos in my room, or showing them off to a guest.
I would recommend to you that if you get the Kit Fisto you judge the blade and sound on your own terms. You may decide that it fits your needs without further investment. After all, any money you save is money that can go toward your next lightsaber replica.
Like I said, this is my own personal taste/experience.
Since I referenced my collection a lot, here is a link to picts of it as it looked in AUG 2014:
http://s1279.photobucket.com/user/bonofl/library/Prop Room AUG 2014?sort=2&page=1