I like the Blvd well enough and it's served us well so far (have had it since Aug 2005). I didn't know too much about ERF so I turned DD FFing at age 2. But until that point, RFing with it was just fine. I also really liked it FFing, better than RFing in fact. Although mine's only got a 33lb RFing weight limit, DD wasn't that weight until over age 3. I know now to RF at least until that point and a 35lb RFing limit would have taken us closer to 4. At age 4.5, DD still fits in the Blvd FFing, with several more inches of harness height to go. She'll definitely make it to age 5, if not longer, in that thing.
Now, I'd been using the Blvd for DS (DD is in a Frontier/Regent/Nautilus now), but the way its installed in my car causes head slump. It wasn't a big deal, really, since DS is 19 mos. But then I got a True Fit for cheap (from woot) and found that I like it better than the Boulevard, which is now just sitting in my dining room as a spare.
So, in the end, I have no real complaints about the Boulevard. There are some aspects I like better than the TF (like the harness adjuster is infinite, as opposed to being in "slots"). DS liked to rest his head against the wings too, and the TF seems a little too wide. In the end, though, they both balance each other out. If I needed another seat right now I'd probably go with another TF just because it's cheaper, but if you already have a Boulevard then I'd just use that.