Elise is a very strong mid/top laner, while Fiora isn't a very strong pick right now.
Fiora is one of those champs who cant really do well at what she was designed to do, she's a pretty lackluster bruiser or shes a melee carry, and melee carries aren't really in the best spot right now. How ever if you get fed she can be a monster for the enemy team as her ult and hydra will melt teams.
Elise is one of the stronger top laners who will most likely dominate her laning phase. Teamfights with her are hard when you're first learning her but you'll get the hang of it eventually. Really you just need to know the right time for spider and human forms and you'll do fine.
In my opinion I think Elise is the better pick, Fiora can be fun but only if you get fed early otherwise you'll be kind of useless. --- Do it
Elise is probably better, but if you want Fiora then go for it. --- Oh, I don't want to walk that far. Anything that takes more than 12 steps isn't worth doing! Eh? 12? Get it? Steps! Hehehe.- Homer J. Simpson
Everytime I see a Fiora on my team I prepare a water bottle to simulate the tears that will happen when my team sees the defeat screen. --- http://oi41.tinypic.com/9ht4ea.jpg No matter which way you slice it you'll both be ending up in Hell!
I like both characters but...there really is no contest: Elise is 50 times better than Fiora will ever hope to be.
Elise can: Jungle, Top, Mid and be extremely good at all these roles. Fiora can: Top... and easily be countered by armor while becoming extremely useless unless you get fed.
Don't get me wrong, both are really fun to use, it's just that Fiora really can't compete right now, which is a shame. --- GT: AstroZombie29 SF4: Vega BB: Arakune MK: Sindel UMvC3: TaskMstr / Haggar / Trish