I just installed one of my new FPSVD seats into our 2002 PT Cruiser, RF outboard driver's side, and I was able to get a rock solid install using the latch. I am very happy with my purchase. I had to upgrade the 6 year old seats we had been using in my husband's car, but did not want to purchase our 8th and 9th Britax seats. (The seven Britax seats in my vehicle just about broke the budget! No Starbucks for me for the next year!
Okay, more like 10 years!)
Anyway, it is essentially the same build as the Britax Marathon with these main differences: the recline is not quite as easy to do, no belt lock-offs, only one side of the latch strap is adjustable and they are a hook on rather than clip on style *no button release*, no pouch for the tethter strap, the fabric isn't as soft, no HUGS or belly pad, and no velcro tabs to hold the straps out of the way when getting baby into the seat. I do think the shoulder strap pads on the FPSVD are superior to those on our Britax Boulevards in that they are longer and narrower. I also think the padding and safety foam are very comparable to the Britax seat, and it is much softer than the Cosco Scenera I was also considering. (I never saw the Uptown in person, so I don't know how it compares to that.) I do know that it has a 55 lb. harness limit, so it will be able to take my little guys all the way until they are ready for a high back booster - and I'm happy about that.