We had huge successes with AndyMark this year.
We ended up using 5,
6" Aluminum Dualie Omni wheels. They worked perfectly all season except for one point during practice where the bolts keeping the wheel together fell out. It was easily fixed with some thread locker.
We used the kit bot chassis this year and modified it to be an H-Drive. We found it incredibly simple to make this modification, we just ordered a third inner side plate and an additional Toughbox Mini. We created four gusset plates to hold the center plate on the robot and had the "H" of our drive installed by the end of week 2. Worked great all season too.
Our least favorite AndyMark product of the season was the
Stackerbox Double. It worked really well once we fully assembled it for use but it was a little difficult to modify the gearbox to work with a CIM motor. Overall, we found the documentation for the gearbox to be somewhat lacking. Would be super helpful if there was a document outlining the method to drive this directly with a CIM motor!
I know the team loves AndyMark, we bought a few non-AndyMark products this year and only ran into issues. The students are really happy with the quality that AndyMark brings to the table.