The Silver 10s are an older model, and based on the word from the street... not bad speakers, but the Silver 300 and 500 speakers are better performers.
FWIW, MA updated the Gold lineup last year... I suspect the Silvers will see a new generation possibly as early as next year. The review I saw of the newer Gold line put them (subjectively) at approximately 85% the performance of the far more expensive Platinum line, with the reviewer even going so far as to suggest the Platinums weren't really worth the price. If the Silvers get anything near that type of performance bump from the Gold line trickling down... I say watch out, especially if they maintain at the pricepoint they already exist in.