In fact, latest phone systems require data-level cabling so you don’t have a choice but to get suitable cabling that supports both. Not thinking about the possibility of you installing any of those phone systems in future describes another major mistake.
A network connection isn’t temporary. With the ongoing advancements, it would be a grave mistake to still choose the cheapest and most basic cables available. Although it isn’t mandatory to go with totally high-end cables, it would be a smart option to go for quality Ethernet cables capable of facilitating a robust connection. That being said, you might not need a 10gbps speed right now, but let’s just say 100Mbps should also not be what you settle with.