TIG welding help, buying a torch

[turbotalon1g]

I need a new torch for my Lincoln Precision 185TIG.

I'm pretty much a noob at welding, looking to do piping mostly stainless steel, hope to do some AL stuff also.

Since I'm buying I'd like to just buy once and be done.

I was looking at a PTV-26-FV (200 amp), but the PTV-17-FV (150 amp) is almost half the price, will I need the bigger torch? These ratings are at 60% so it's not like it couldn't be done if it have to.

A quick google search produced this:
http://www.weldingtipsandtricks.com/tig-torch.html

That brings up another point, I have small girl like hands so would a smaller torch be better for me?
I handled a 17 series torch at Toll, didn't weld with it but it felt light even though it was larger in size.

Thanks for the help.