The Hawk Helium steps are supposed to be really nice, but I think any aluminum-based step is considered "premium" and therefore better built than some of the cheap steel ones you see floating around the market for around 60-80 bucks for a set. Most of the sets of steps come in sets of 3 or sometimes 4...you might want to buy 3 sets of steps for 2 stands, because you are going to end up wanting to go higher in the tree than a single set will allow.
The biggest question is whether you intend to move your setup around some, or leave it set up mostly once the season gets up and going. If the former, invest in some higher quality lighter gear. If the latter, I'd choose comfort over weight and save money on steel stands with comfy seats.
Me personally - I'll be getting a more mobile setup with aluminum steps and a lighter stand, then getting a "set it and forget it" setup for a more permanent spot somewhere. If I need to move around more than that, I'll use my climber.