Bamboo ones aren't the Ferraris of knitting. Some people prefer bamboo/wood to metal (IMO these tend to be the loose knitters). Some people prefer metal needles (more slippery) to the wood/bamboo (less slippery) - generally the tight knitters prefer these ones. I prefer slippery needles and rarely work with wood or bamboo. You can get plastic ones as well, I think these are in between the other two basic kinds with regard to their slipperiness.
Before you spend too much on something you might not like, I would suggest waiting until you have a good idea of what needles you like. Buy the cheapo plastic ones and try knitting with them (practise on both wool and acrylic). If they are too sticky/not slippery enough, try metal. If plastics are too slippery for you, try wood or bamboo, or both, and see which you like.
Try using circulars as well, the interchangeables are cheaper than buying all the different sizes, but some people do not like to knit flat on circulars, others prefer it and will never use straights. Don't buy an expensive set until you have decided whether you like a certain material for needles, and that you like using circulars.
If time is an issue with your birthday, could you ask the gifter/s to hold off on your present for a few weeks until you know what ones you want? Gift vouchers for online knitting retailers might be an option too. The ones I've seen raved about the most are Knitpicks Options needles, BTW. There's a sticky at the top of this forum I think about people's thoughts on the different brands of interchangeables.