The day one ports are nice, but the delayed ones that actually perform/function well are good too. Nuclear Throne is a good example of how bad things can be, but there are also amazing ports like Necrodancer, Phantom Breaker Battlegrounds, and Shovel Knight that were definitely worth the wait. I've bought some stinkers like Dustforce (which never got the performance issues patched) and Nuclear Throne, but for the most part, the ports tend to be worthwhile if the developers and/or port studio have time to deliver a quality product.
By the way, the port of Dariusburst Chronicle Saviors is amazing. Rock solid 60FPS performance, controls that hold up with the game's demands well, and great portable accessibility with short levels and sleep mode. Definitely check it out when it's on sale, but the content is well worth base price.