Thanks, SuperD.
For parts, AMain, HeliProz, and HeliDirect are where I usually look. My first look is heliproz because they support the Thunder Tiger helis pretty well, and I'm thinking about buying one of their Raptor kits- they have some very good combo deals. For the Mini Titan specifically, HeliDirect is a good place to go-- they're a good company with very good customer service, and I would go there first for most things. There are some pieces for the MT that they don't stock though, and I go to HeliProz for those, and HP will be my first choice, instead of HeliDirect, if I do wind up buying a glow Raptor.
[edit] Oh, and the MX450 XS is in good shape, and flying just fine

. It's not going to the mothballs any time soon. [/edit]