I have the bookshelf tank and it has numerious issues. You can do much better for that price.
The acrylic on this tank scratches very easy, moreso than my other tanks. Maybe not an issue if you're careful enough.
The HOB filter that comes with this tank is the noisiest filter I have in the room.
The plastic top that the hood lays on is poorly made. It's thin plastic and the breakaway areas for the filter and heater don't come off clean.
This tank is very short. I had an amazingly difficult time finding plants that weren't too tall for this tank. I have found no decent heater that is short enough and it will have to go on horizontally.
It does not fit on my bookshelf like I wanted, the HOB filter takes up a lot of room behind the tank. You can remedy this with a sponge filter and air pump.
If you want this to divide it for 2 bettas, it's of good length. Otherwise I would suggest a square shaped tank rather than this extremely long and short tank.