Is that the Deluxe? Goes to 55 lbs? If so, it is a good seat. It was made by Britax and has the same shell as the Decathlon. It has a few differences - standard LATCH hooks instead of alligator clips, 55 lb limit, cannot tether rear-facing, one crotch strap position. For the price now ($129) it is a decent value. However, it is no longer being made and spare parts are not to be found. You can use a Marathon/Decathlon cover and it will fit, but not an authorized substitution. I'm not sure their position on harnesses, etc. Also, most of the seats will probably be 6-12 months old at this point, so you will lose a bit of lifespan.
Mama to three boys ('03, '05, '07)