Im building a trex 600 wondering what servos to use thinking about the Hitec HS-6965HB Coreless 2BB HS Servo ,any body using them

They are decent. Personally I like the Futaba 9452s

the Hitec's faster but is it a dependable servo

I think hitecs are great servos for certain applications but I prefer the reliability of Futaba or JR for large helis. A servo failure in a car or other ground application rarely leads to a totalled $1500 vehicle.

Is there a servo that you can recomend as good as the jr ds8717 that i dont need to get a second job to affored

Nope. You get what you pay for. If you think you need that kind of performance you want 8717s or BLS 451's

If you want good ones for less money get the 9452s

If you want pretty good ones get 9252s

FWIW I threw my 600n that I got in a trade together with 9252s because I have a drawer full of them. One of the pro's flew it and asked if I had 8717s in it.

What about a gyro for hard core 3d

Hard core? I use 611 with 9256's or BLS251s

Solid-G works well with a 9256 or BLS251 as does the JR 770/8900 and the Spartan with any of those 3 servos.