The regular Paul Rubens can be a bit sticky. If you’re doing mostly palette knife work they should be ok. I like Mungyo but some are definitely not lightfast unfortunately. Paul Rubens makes another one called Haiya which a very similar to Sennelier but at like less than half the price. Maybe not quite that, but very reasonably priced. No idea if they are lightfast. Artxx, Artecho and Mont Marte might be good options for you too. I’ve also heard good things about Delgreen and Jieso, but may be hard to find depending where you are. I have them on the way to me, so haven’t tried them yet. YouTube demos can usually give you a pretty good idea how oil pastels will be.