jenniferlee, no, we don't think Evenflo seats are all bad. It's a case-by-case basis, it really is. We hate many, many Dorel (Cosco, Eddie Bauer, Safety 1st) seats as well, and some Graco seats, and other brands, too. Opinions here are truly based on the merits of the seat, not our opinion of the company as a whole.
I wanted to quit recommending Evenflo alltogether when I realized they said a 1 year old who hit 30 pounds could safety use one of their belt positioning booster seats. I emailed them with my concerns about this low limit and the customer service rep basically danced around my questions and said it was fine.
But to get back to your question, the Express is a good seat.
It has very high top slots, which ensures kids can make it to the full harnessed weight limit (40 pounds in the US, 47 pounds in Canada). Lots of other combination harness/boosters have very low top slots and are outgrown by height way too soon. The Evenflo combination seats are among the highest top slots out there for 40 pound weight limit harnesses, so we recommend them quite often (the Express isn't made anymore, but we recommend the Chase, Bolero and Generations all the time).