Second this - and just to be more specific for OP, the events you'll want to be on the lookout for are at the XL Center - street parking will be impossible then, but there's several garages in addition to the excess of lots so it's not really a challenge - especially since you recognize that parking having a cost commensurate to its demand is actually perfectly logical.

Besides that, street parking is easy enough to find, it's not really worth pointing out specific areas, and worst case scenario, the next block you go down will have a lot and/or garage if you happen to get unlucky that day.