Knitting Needles are a very personal preference, and what one knitter likes another will hate with a passion. I personally prefer bamboo needles - they are light, warm to the touch, and are quiet (not too much clicking when knitting). Your preference will depend on a number of factors, including how you knit - tightly or loosely or somewhere in between, what you are knitting with - a nice fluffy, grabby wool, or a slippery silk, and what feels comfortable in your hands. I also prefer circulars to straights, but that’s just me. Do you know any knitters who would let your borrow some needles to try for a few days, or is there a yarn store nearby who would let you “try before you buy”? I’d hold off buying anything except the needles for your current project for a while so you can try out different types, and decide what YOUR preference is.