Great post Mike!
Deepak, tube maintenance is easy once you learn how. Choose an amp with the adjusting controls exposed to the exterior of the amp for easy adjustment and measurement. AN has new sponsors who sell tube amps, maybe they can chime in about the ease of bias adjustment.
Audio Research amps have adjustments buried away, but if you stick to factory tested and matched replacement tubes, they age well and stay well biased throughout their life. AR amps also hold their resale value very well.
If you use reliable brands of tubes like Shuguang, New Sensor, SED then bias should remain stable. Other brands of power tubes (Eastern European) may be less stable bias, IME.
Consider the cost of tubes before putting tubes in a family system. Your audiophile senses will want to use Black Treasure or other expensive and great sounding tubes. But they are just too expensive to piss away on vid games or TV that's on all day, but they make glorious music. On 10 hours a day means replace them every 8-10 months. 8 black treasure KT88s will give you 100+wpc and cost $700/set. Compare to "normal" $25 - $40 tubes from New Sensor or SED. My 300Bs are $1100/set. Something to think about.
I'm still keeping an eye out the the SS amp that does what a tube amp does (tone, space, life.) Or for that matter, a tube amp that does what a SS amp does (silent background, low distortion, low impedance, relatively low cost compared to tubes.)