Dave, Thanks for checking out the knobs.
Personally, I think it's a great idea (as it's my company) and I think every Helix user should upgrade their knobs to something solid aluminum in your choice of colors, even if it's black.
Feel free to contact me if you have any questions.
And for Basschat users, Please use the coupon code BASSCHAT to get 1/2 price shipping to the UK.