I would personally love to dive steel tank(s) but can't because I am too skinny. By my numbers, I would be ~22# heavy (wetsuit) at the beginning of a dive at the bottom w/ an PST e7-120 AFTER ditching. If I am at 100', this is not good news. Typically if you are forced to drop weight, it is something really bad causing it.
At the surface, I would be ~5# heavy still at the end of the dive. I don't want to have to fight to stay afloat.
You have a BC you say? Do you want to be REQUIRED to trust this when it hits the fan? With a drysuit, you have redundant buoyancy so you can get away with being heavy.
I was so close to buying a couple PST steels! After hearing the DIR bantor, I decided to actually crunch the numbers to see if I could still pull it off with just a wetsuit. The answer was no. If I weighed 50# more, I might have been fine.
I am now after a couple Al100s. Not because they are better tanks, but because they are better FOR ME.
If you are a newbie, please look into your weighting when you decide about a tank! You get the chance now, don't find out the hard way. If you need a hand with this, just ask. I'm sure everyone here would be willing to lend a hand.