Stainless vs. aluminum has been debated endlessly here, so if you search you can find the pros and cons of each, if that puts your mind at ease.
I actually use both - SS brew kettle, and aluminum HLT.
I say use what you've got, and save up for a bigger pot later when you decide you want to move to full boils or BIAB/AG.
Read my brewing blog here! Last of the Zyme Lords
BOUSIRIS BOUERY - Home of the Zyme Lord
"His is the House that Malt Made."
- James Joyce
Old Took's Rethe IPA
Weiss Blau Weiss Bavarian Hefeweizen
- empty tap -
Le Petit Plésiosaure Summit Saison
Anna Livia Dry Stout
Kessler's Rampage London Bitter
unnamed ginger metheglin