Hi,
I have a 24mm RMS, and I want to get a 29mm one. The 29mm seems to have 4 different versions! Which do I choose. I would like to be able to launch as wide of a range of power as I could (like from F to H). Which casing should I get?
THANKS!!!!!

There are many MORE than 4 29mm RMS engines.
Unless you want hi-power, you should start with the hobby line 29/40-120...this takes loads from E18 to G64.
The hi-power 29/60 takes only F loads, the 29/100 takes F and G, the 29/120 takes only G, the 29/180 takes G and H, the 29/240 takes H, and the 29/360 takes H and I.

I personally like my Hi-power cases better, but the loads are harder to find and sometimes cost more.

I currently have the 18/20, 24/40, 29/40-120, 29/100, 29/120, 29/180, and 29/240.
I need to get the 29/60 case for the complete set of 18mm through 29mm.

__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !

Thanks. What the difference from Easy access and hobby line (see discount rocketry)

Easy access reloads fit the High-Power cases ONLY, the 29mm hobby-line reloads fit the 29/40-120 hobby-line case ONLY.
The easy access reloads have a BATES grain (circular port-burner), whereas the hobby-line uses C-slot grains.

__________________
When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !