I have the Greenhawk brand (can’t remember the name… Elation maybe?) washable black coat and it’s cheap and fine. Fits a little loose on me, but very comfortable and lightweight. I swapped out the black buttons it came with for silver Celtic knotwork buttons to make it a little more stylish. I also looked at that Kerrits coat and liked it as well.
My other coat is a $15 consignment hunter green coat, probably from the 80s. I took it to a tailor to have a fourth buttonhole added, replaced the old buttons with silver knotwork ones again. I’ve gotten multiple compliments on it, including from a judge as I introduced myself before a test, and I do training/first level. I didn’t want to do anything unusual at first because I didn’t want to stand out from the crowd as a new ammy, but I think the green coat and the green ear bonnet on my chestnut horse make for a nice overall picture, and that doesn’t hurt.
My breeches are the SmartPak Pipers that are cheap and comfortable, and I have the SmartPak show shirt, which is also cheap and comfortable, and looks neat when jackets are waived. If you can’t get SmartPak in Canada, I think Ovation and Riding Sport both have cheap white collared short-sleeve shirts that are similar, cheap, and nicely breathable.
If you hadn’t noticed, I like cheap and comfortable. 