I beg to differ on two statements

Triacs require a lot of protection to survive high voltage spikes and overloads - relays are much more tolerant. If you want reliability -choose a relay.
Triacs are extremely reliable; however only if dimensioned for worst case. Controlling e.g. 220AC with a 400V triac will never work and, since your math tells you it should, you say "triacs are unreliable". Try the same with a 600V triac and it will work "forever". The difference in "reliability" between a relay and a triac is that a relay will ignore volatge spikes, whereas you must take them into account when designing with semiconductors.

But where are the small 8051's with a/d like the Pics,AVRs,HC05s? yes there is Cygnal.
never heard of the Philips LPC series ?

Erik