See https://sites.google.com/site/g3xbmqrp3/hf/10m_op .
The above link (on my main website) is my "take" on 10m operation. Although I have never applied for a DXCC certificate I have worked well over 100 countries on 10m with QRP and small wire antennas. There is no doubt in my mind that this is the best amateur band we have. Low cost CB type all mode rigs means it can be accessed at low cost, even buying new. A small dipole is effective and need not be too high.