Ive got an ovation 5 point of dover saddlery for like 100
For low price- the brand Royal which you can get from bridleandreins .com for like 60 bucks and it is really good quality, for high price- I love antares they have both elastic and leather ones!
I would try a pad first for a slideproof and more compfortable ride for you and your horse but I don’t recommend gel. Good luck
Also you should try gel-ese pads under your saddle pads
I love my CWD breastplate it is more money but high quality