I'd be inclined to agree with you. The ice has it beat in almost every spec/feature. Most important to me was the lower total power of 70 watts vs. 120 watts.

I think the only thing the onyx would have over the ice is that it is more compact and simpler because it has the balancer and the ps inside it.

My Onyx 235 has been slightly modded to allow 8 amps and 70 watts on AC power only. I like it because it is a simple charger. I think we can do a lot better though for $85 with some cheap chinese chargers on the market.