I have a 2015 Triton 18TX which is the same hull as the Ranger RT188. About the only real difference between them are the consoles and decals. The Ranger also has a channel trailer but the Triton uses a tubular trailer.
I bought my boat in December 2015 and I've been real happy with it. With a 92" beam and a 12 degree deadrise the boat is very stable. I can be at the bow and my buddy can be moving back and forth on the back deck and the boat doesn't rock much at all. Another thing I like about this boat is that it sits level and doesn't have the bow high attitude of my last boat.
This hull runs pretty flat on the water even when trimmed out so its not going to be a speed demon. I have the 115hp Mercury 4 stroke on mine and while I know of guys hitting 50 MPH mine has averaged about 45MPH with a Laser2 22" prop. The Laser2 prop is popular for this rig but the guys going faster are running the 20" pitch.
This boat has impressed me with the build quality. The braces on the bottom of the lids are welded solidly. (The ones on my last boat were spot welded and fell off.) The seats and wiring harnesses are made made in house and it shows. The harness uses weatherpac connectors and also has terminal blocks at the console and bow to power your graphs. There is also a wiring schematic for the boat wiring in one of the lids.
My boat is the bass version with the center rod box and two storage compartments at the bow as well as two small compartments on the rear deck and storage under the seats. Having all the storage up front is great but I do miss not having a front livewell. If you mainly crappie fish you should reall compare the two versions and decide which one is best for you.