You've got bitten by the H bug.
Of the bags you mentioned, Kelly would be the least practical. It's also not that easy to get in and out of. You can leave the straps undone and just close with the turn lock but some don't recommend doing that for a long period. I know many members here use theirs everyday but I find mine a bit cumbersome.
If you like that look (straps across the front) then a Birkin may be better for practicality but it's a handbag so you cannot carry on the shoulders (if that's important). Not to confuse things further but a Jypsiere is another option. It's kind of Kelly/Birkin-ish but you can keep the flap folded in like the B so you can get in and out easily and it has a shoulder strap. For myselft I got B first then Lindy and So Kelly, and only got a Kelly last because I've always wanted one. I don't find I use it as much but then it all depends on how you plan to use the bag. Have fun shopping!