I used to love Stash teas, though I never tried their white tea blends. Tazo is nice too, but my experience with them is much more limited. I believe that Mighty Leaf has one of the the best lines of bagged tea in terms of both quality and taste.
I finished up the last of my teabags around February and by the end I would drink it and say to myself "This tastes nice, but it isn't tea." So, if you like the flavors then I say go for it.
But, if you're looking for loose tea, then by all means jump in, the water's fine! When time is a concern, I usually go for a black tea, which lends itself really well to western style steeping (couple tsp per mug of water) and all you need is an infuser to replace your teabag.