Well if you've got the money you can't go past the Hitec coreless digitals such as the [link=http://servocity.com/html/hs-7965mg_servo.html]HS7965[/link] but if you're on a budget then things get a bit trickier.

I'm hesitant to recommend any of the servos sold by Hobby City mainly because they keep changing the specs without telling anyone. Quite a few people have already been caught out by finding an HC servo they're happy with then ordering some more, only to find out that the new ones are grossly inferior to the originals.

I've got HS5925 servos on my Mojo 60 and they're wicked-fast and powerful with an A123 pack but I'm also the first to confess that this really is overkill for a lightweight profile bird.

A more cost-effective option might be the [link=http://servocity.com/html/hs-5625mg_digital_speed.html]Hitec HS5925[/link] but by today's standards, they're still pretty pricey for a 3-pole digital servo.

In my tests, the Savox servos proved to be *very* good but I don't know of a US reseller of these yet. Their equivalent to the HS5625 has a RRP of $42 and their equivalent of the HS7965 is $65.

The bottom line is that you can use almost any metal-geared servo in the tail of a Mojo 60 and any you can even get away with nylon-geared servos on ailerons. I've got Futaba 3010s on the wing of my Mojo but they're an *awful* servo very, very sloppy, so I couldn't recommend them.

As for A123 packs you can get them from a variety of sources but I've found [link=http://www.radicalrc.com]Radical RC[/link] to offer good prices and unbeatable service.