Straight Flyer, but not a far flyer.  As newbie with slow arm speed, I wanted to find straight-flying mid-range disc because the courses in my area have lots of narrow gaps to squeeze through in the woods.  I heard the Innova Mako3 (also 5/5/0/0) flew straight, but every one I tried was too heavy for me, so they faded fast.  Then I found the Cheengz Premium I-One, which weighs only 146 grams, and it worked – straight as an arrow!  The only problem is that I just can’t get much distance with it. (Most people could throw it farther, but I have some old age physical limitations.)  So for me, I would call the speed no more than 4, and the glide down to 4, too.  Still, I use it because it is just an amazingly straight flying disc.

The plastic feels very flexible -- almost floppy -- but it turns out to be very durable. After hitting tree stumps and rocks, it still looks new.

One other thing about it that I noticed is that the grip feels very thin and deep, kind of like toy Frisbee.  The rim is quite narrow and deeper than most.  Because of that, I need to push up with my finger tips against the bottom of the flight plate.  That’s not a problem for me, but people who use a power grip – with fingertips pressed into the rim – may find it flops down on them on a Hyzer angle instead of level.    

Solid straight flying mid with zero fade. Their Premium plastic leans on the grippy side, so it's good to use when sweaty or wet out. Highly recommended if you throw a Mako3 and want to mix up or just need a dependable mid.

This is perhaps the truest straight flying golf disc on the market. This disc will ride whatever angle of release it is given. 

Throw it flat, and it will fly dead straight. Throw it at an anhyzer angle and it will turn right. Put it on a hyzer angle and watch it curve left.

The Cheengz I One is like a putter in a midrange body. This disc is really slow, glidey, and does not fly very far for me. The disc I've been using weighs only 163 grams and I love using it for straight line approach shots of less than about 200 feet.

If you're looking for a golf disc that will fly dead straight with out much variance, try the Cheengz Premiuom I One.

Got one, love it, put in bag and bought several more, very straight on line