We'd recommend the Colorado bar as the best mixed-use Cross training style barbell. This is for those taking their Olympic lifting to the next level. However, the Double Black Diamond Power Bar and Olympic Lifting Alpine Bar would both pair well for people who want specialty barbells to match their all-round Colorado Bar.
Several high-end oly barbell manufacturers have switched to using inner-race bearings over standard needle bearings. We aren't the first, but we did do lots of testing to validate the design, and we determined that this would be the best and most robust design for this barbell. Barbell sleeves are a great application of the inner race bearing because the inner race protects the longevity of both the bearings and shaft and will provide smooth consistent spin for the life of the bar. We are incredibly proud of the performance of this bar, especially compared to much more expensive options on the market. We're excited to hear how you like it!