Both are great cards, but you can't really compare them very well. The CycloDS costs around $50, but it's the top of the line and the best you can get. The Acekard2 costs around $10 on DealExtreme, and is definitely a budget card. It doesn't have all the features the CycloDS has. Both have support for the 3in1, have great DS compatibility and great homebrew support. You can't go wrong with whatever you choose.