potty seat or chair?

Heather

hey there! so, my son is 15 months old and seems to be starting to take interest in using a potty. my question though is.. do I get an attachable seat to put on the regular toilet? or get a potty chair? all of the ones I've looked at don't have the best reviews for a splash gaurd for boys so I'm trying to weigh all options before I decide on which one to buy. can you guys please tell me what you use and what you like best about it?