A few weeks ago I bought a new grab bag saber from Ultrasabers and, last week, I received my lightsaber. I got a Sentinel V4 LE in Guardian Blue. I have tried out this saber vs my old Aeon and I like it a lot better not just because it is newer but also for a few features that are in this saber and not my old one.
The features on the Sentinel that I found cool:
1. The handle is bigger then the Aeon which makes it easier to hold 2 handed for me.
2. the 2 choke points make great upper and lower grip points that can be switched mid battle.
3. the saber with blade inserted is about 1/2" longer then the Aeon which actually helps me with orbits since the center of balance has changed to be a little closer to the handle.
4. The pommel is very nice to work with and since it is MHS compatible, if I wanted to change it I can do so easily.(I have exchanged pommels with my best friend since the video to have a black accent which gives a nice effect.
5. The Ultraedge Heavy grade blade works really well with my Guardian Blue color compared to the silver color of my Aeon.
I have seen no flaws in the saber and enjoy that both my sabers have been flawless from what I can see. I have recommended Ultrasabers to all my friends after I got my first one and I still do. I cant wait to get a new saber in the future and hope to be able to get a collection going over time.
Video Review:

Overall rating: 9.5/10 (The battery pack slides around in the handle so there is a clunking sound when being used but you do get used to it after time)