Honestly, I haven't been playing much but I think I already play more ACHHD than ACNL. I mean I spent most of my time in NL trying to get new furniture to decorate all 4 of my houses and trying to come up with how to fit in all of my ideas and HHD made that possible.
I mean I might still play NL from time to time but it won't be as often as it used to be.
Nah, I don't think I'll stop playing acnl. I've seen people playing it on youtube. It looks like a cute little game, but not enough to hold my attention for long. I'll keep playing acnl. Until I get bored of it and quite for a few months like I always do XD But I always come back in the end.
Surprisingly, my friend did give up playing acnl when she got the new game. Which I though was odd. The game doesn't seem to gave enough content to replace a main series game.
I've been playing acnl for a while now, and I really enjoy it; I recently got achhd, and yes, it is fun, it doesn't keep me as entertained as acnl, that's just how I am.. Both are really fun though!
I've been playing both. I see HHD as more of a small time game, like a mobile game, and NL I spend more time and attention on. So for example, I might play HHD on my commute home because it's a set amount of time and I don't want to get too far into a request or have promised a villager something, only to have to stop and change trains and then forget.
I still prefer New Leaf over Happy Home Designer. I played HHD for a few days straight but then I started only playing it whenever I got a new card to add to my collection. It's cute and fun but I feel like New Leaf has more to do in it.