I make my own mix for my beard oil however the creators of Beardology beard oils and balms were kind enough to let me sample and review their products and I will say that they do have an excellent product. their beard oil and balm both felt great on my beard, gave a nice sheen, added control, and had a good aroma. very woodsy, manly. though I'm not really much of a fan of patchouli, I can live without that scent personally. I had the opportunity to try the Avalanche scent and I will give them my thumbs up. The patchouli wasn't overwhelming and it didn't bother me much.
other products I hear good things about often are Woodsman beard oil and Honest Amish beard balm. I guess it's something you gotta go trial and error with. I'm sure I'll eventually start making my own beard oil and try to sell it someday down the line but with med school coming up I think I'll be rather hard pressed for time. It's still a hope though
As for conditioner, I'm not familiar with any leave-in beard conditioners so I can't tell you much about them. All I can say is use the regular conditoner you use for your hair on your beard while you take a shower.