Thread, like fabric is a very personal choice. What one person raves about another can't stand. You will have to choose what YOU and YOUR MACHINE likes.
That said, I have an innova and she is a trooper when it comes to thread. I have used everything from some crap my MIL brought me that was found in a garage sale to Superior threads. My go to thread of choice is Glide from fil-tec (bobbin central) along with their preloaded magnaglide bobbins. Glide, which is polyester, does have a very high sheen and some people don't like it. I have also been more than pleased with Isacord embroidery thread, every superior product I have tried and YLI threads. I do not like Connecting threads, neither their essential for LA or their cotton thread but I will use it if the color is right and it suits the purpose but once my stock of it is gone I will not reorder. I am very fortunate that my Innova will run on any thread I throw at her (some tension adjustments are necessary) but when it comes right down to what effects I like the look of best, I go with Glide and magnaglide bobbins.