Funnily enough I'm experimenting with yeast ATM, when I started brewing (we're talking late 70's) there wasn't a lot of variety available, from what I remember, local brewshop in the market only had a couple of choices!
I'm trying Kveik voss, New England and Verdant yeasts, together with different hops, some very interesting beers appearing, very impressed with the results. To be honest, think tastes have changed a bit over the years as well, mine certainly have since been travelling a lot over the years.