I was an early adopter of the Trektop NX and I LOVE mine. Before the NX, I have run several other types and brands of OEM style tops.
The best advise I can give is that if you like the OEM style of top, get a Bestop Replace-a-Top. Skip over the other brands and pay the extra couple of dollars. There is a reason Bestop costs more, and in this case it is completely worth it.