I thought the NUC12 Extreme gaming/minitower NUC was a nice machine. Seemed to be a decent value for performance in its small form factor. What are some good t

I thought the NUC12 Extreme gaming/minitower NUC was a nice machine. Seemed to be a decent value for performance in its small form factor. What are some good third party equivalents to the NUC12 and (larger) NUC13?