Context: My 2 favorite RPG systems are HERO and 3.5Ed D&D.
My experiences with HERO go all the way back to when it was introduced as Champions, and over time, I’ve gotten to where I can essentially model whatever I want in it.
With 3.5Ed, I think D&D found its sweet spot of a myriad of options coupled with retaining most of the sacred cows that made D&D stand out from other FRPGs.
So, I like both types of game systems.
Basically, I’ll play almost any FRPG. But if I want to play D&D
in particular, I’m looking to play 3.5Ed or its closest cousins (Pathfinder, Arcana Evolved, True20, FantasyCraft, Midnight 2Ed, and so forth).*
There’s a couple other games that I treat similarly, like Paranoia!, Deadlands, and Traveller. If I’m designing a campaign for almost anything else, though, I’m reaching for HERO.
CAVEAT: if I know of an extant game that already models what I’m thinking about, I WILL check it out to see if it would work better than what I could do in HERO. For example, if I really wanted to run a RIFTS game, I probably wouldn’t want to use HERO to do it. Modeling the difference between Damage and MegaDamage is a headache I don’t want.**
* I did figure out a way to do D&D 1-4Ed in HERO, but I never ran it beyond a couple of simulations. The point of the design was to let players run the D&D race & class combinations they preferred regardless of original edition within one rules framework. The issues with doing so were more on the player side than the mechanics.
** I
have given it some thought, figured out
some possible solutions, and rejected them
all.