Maggie owners opinions wanted

Hi all. I have a pair of MG 111s. The previous owner did some crossover tweaks to supposedly make them comparable to 111as. Long story short, one bass panel stopped working but I continued using it anyway. After about a year it finally damaged the amp. So what I'm wondering...should I send them back to Magnepan for the rebuild...somewhere between $700 and $1000, or should I go for a pair of 3.6s? I guess it comes down to...how much of an improvement would the 3.6s be overs the 111s. Opinions, please! Thanks.