there is no meaninful difference between tit and alum pots for efficiency. Pot shape and fit to your burner + windguard will be way more efficient. YOu can test yourself with two pots at home and measuring boiling time.

To get around the slippery problem which was hugely annoying, i scraped the bottom pot with sandpaper and even internally dented another of my pots. slippery boiling pots super annoying and dangerous.