^^^ These are my favorite shears. I use these for EVERYTHING with the feet, front leg feathers, and tail.
Because they are so cheap, I don't mind reaching for them before everything else - especially when I'm grooming a dirty dog.
Would I use them on the ears or hocks? NOOOOO!!!!
But this follows that I do not have 1 pair of shears that does everything. Even though, yes, I have a favorite pair of shears which can do most basics.
What this means is - YES, you DO need to get more than 1 pair of shears for grooming your dogs. But probably not a great idea getting a set. https://www.amazon.com/Ed-Geib-Pcs-G...s%2C165&sr=8-5
^^^ This is a pretty good set, except I would never use the curved shears. For the purpose of shaping around a dog's foot - these 8.5 shears would be way too big. Something like 6-7" would be better. But if you get this set, means you would be stuck with a pair that you'd never use.
I have Kenchi 5 Star curved shears for feet. <= Mind, I am NOT using this to trim heavy bulk around or under the feet. That is why I have the Conairs + pull my clippers out. The Kenchi's are more for shaping and light use. Because I don't want them going dull.
Same thing with thinning shears - there is a use for them on or around feet as a finishing product and a shaper, but you do not want to use on heavy bulk around the foot. That will KILL your thinning shears.
I have a small pair of 5 star thinning shears - and I use these on both feet and ears. Not heavy duty stuff. Just finishing.
Ears - I have a 8.5" straight shear (I think the one I reach for all the time is Dubl Duck Mercedes). I need a sharp edge + length of blade to do a good clean cut along the edge of the ears.
Before I bring the thinning shears out - I use a stripper on the ears and under them. Again, the stripper is about $30-40. And the thinning shears cost about $100 to replace. So heavy work - I use the cheaper tool. Thinning shears come out when I'm finishing up.
Pictures, you can kinda see sort of what you are aiming for.
Biggest advice is until all of this is old hat to you and you are not really thinking so much about "how" to do something and just doing it.... don't try to do everything all at once. And check around to see if anyone in your area who does all this the right way would show you hands-on how to groom your dog.