If you're used to a vented model, you might have a difficult time going to condensed drying (ventless). If you're constantly in the desert where you can hang things to dry in a few hours, maybe having a ventless would be acceptable.
Splendide actually has a pretty good reliability rating. We've had vented Splendides in two RVs and neither of them gave us any problems even under heavy use. LGs are reliable and popular and if they made a vented model, we would consider it.
Pertaining to modifying an LG ventless to be vented, there must be a way as I do have this YouTube video from earlier this year bookmarked but the clip itself does not give any instructions ...just a statement to contact him.