Stamblades are just as much fun as a Magblade. You just play them differently. Kind of.

I play a Bosmer Stam Warden. She is a bit rangerish, uses her bow and a lot of nature based skills. It is a lot of fun.
And if you are not sure how to build, you can look at this guide for inspiration. I didn't copy it entirely, but it helped me understand on what I should base my armorsets and skills on.

I'd say anything except a templar, but that's only because I don't like playing templars.
I've had a bosmer warden, stamsorc and nightblade, and all three were super fun to play.

For best use of passives in both pve and pvp then stamblade

For something different that is nature themed like bosmer go stamden. Bears and bugs and birds and trees and lots of dps and heals.

I have three bow/bow stam dps characters and all are Bosmer: warden, NB and sorc.

Of the three, I much prefer the sorc. Her challenge is sustain but I love her elegantly clean style that allows her to feel stealthy and rapidly respond to changing situations.

The warden has a nice heal for herself and others but feels VERY unstealthy for an archer with her bear and 'neon mushroom' spells. I also dislike that she requires 3 buffs instead of the sorc's 2 - that makes her clunky. She is poor for grouping since she requires excessive set up and preparation to start each fight.

I find the NB to be less fun and effective than my other two due to the clunkiness of managing spectral bow and the lack of major brutality when opening a fight (without potion or dreugh king slayer). She does have good sustain though.

Other players' mileage and opinions will vary greatly so bear in mind I'm simply sharing my own observations. I went with all three classes to see which I preferred and the sorc works best for me by a significant margin.