Bought a full tethrd setup this year (phantom saddle, predator platform, tether, HYS strap, recliner, 2 sys haulers, ropeman) and use buckleless hawk helium sticks (have standard and mini, prefer mini). Use aiders on 2 sticks to get higher.
I haven't used it a ton but I sure struggle to keep still in it compared to sitting in a stand. I still prefer a stand but am keeping the saddle for certain situations like where concealment is really tough or I don't want to pack a stand and know its going to be a short sit. I really cant see myself doing an all day Nov sit in MN with one.
For steps, if $$ aint a thing id get shikars or wait for tethrd One steps to hit the market. The heliums work great for $100 per set.