Recomended 3-piece clutch?/ Receiver pack

[Mastio]

What 3-piece clutch is the best? I've heard the HPI is wayyy to soft, so i wanted to go with Integy, But i noticed there are different types from Integy. Which is the best? Also another question, can there be issues with using a hump receiver pack? Servos shaking etc.

 

[Racer 1966]

A hump receiver pack is better than AA batteries and will not cause any issues.

I run an Integy aluminum 3-shoe clutch and really like how it bites hard.

 

[Mastio]

What's the difference between http://www.rcplanet.com/Integy_7075_Clutch_Flywheel_Savage_p/intt7041silver.htm and http://www.rcplanet.com/Integy_Evo5_Clutch_Conv_Set_Purp_SAV_p/intt6703purple.htm ? If any