The best on the market right now are probably the Tengun, Valk, and MGC. However, at your speed you can go with any of them and be fine. Even the best 2x2ers barely slow down when they use another decent 2x2. Look up some reviews on YouTube for each of them and decide which one you think sounds best, taking price into consideration as well. Also, make sure that you're looking at recent content, if you look at reviews from a few years ago then you might not get the latest info