I buy from LMC on occasion. You can most definitely get buy without using them if you hate them. But, you should get their catalog mailed to you if you don't have one, they can be a good resource regardless if you purchase the parts from them or not. There are a couple of the big supply houses I really hate. But you need to weigh price, quality, shipping and so on and take the emotion out of it.
Here's why!
I purchased from a small guy, and I got a box drop shipped from my sworn enemy... so much for my boycott! Wow! I really showed them, ended up paying a few bucks more only to get a box from a company I don't care to do business with!
Don't cut your nose off to spite your face!
j