If you listen to edm then the yamahas are fantastic. As far as female vocals go, they are good. not great but good. overall though these iems are great. the reason i say the vocals aren't great is because there is a little bit of a lack of sparkly texture to the vocals. but again you would probably have to get something much more expensive to get better vocals out of a warm sound signature. in all actuality the vocals are really great, but i know people are picky here and i have heard more engaging vocals on iems before, but that was typically with a more upper mid/trebble forward iem. as far as warmer sounding phones go, these are top notch. i haven't found anything that i like more. Im wanting to try the dunu dn1000 as I've heard good things. but as far as the yamaha go you really can't go wrong. i can't imagine anyone being disappointed with them unless you are used to really really high end iems like the shure se846 or something. and I've been told that the yamaha gets you 85% there as far as sound goes. This is all if you are looking for a very dynamic and warm sound. Another option may be the sony xba 3. put it this way... i have stopped searching for iems once i finally listened to all the reviews and purchased a pair for myself. and i like them so much that i purchased a second pair that is sitting in my desk in case my current pair breaks or gets lost. thats how much i like them. and by the way I'm a signed trance producer so i am familiar with good sound. the only thing i would consider upgrading to is the dunu dn1000 or dn2000 or the shures i mentioned. and thats only because i am interested in the multiple balanced armature setups. i can't speak for your other option since I've never heard them but you really wouldn't be wrong to get the yamaha. they are tried and tested. also they seem to be durable. I've had mine for a year and they stay in my pocket without a case EVERY day ALL day and i haven't had any issues. hope you find what you are looking for.