Cisco ASR's with RSP440 engines...

If anyone on here has experience with the ASR series running the RSP440-SE or -TR, please contact me off-list. I'm trying to better understand real world performance when it comes to handling a few full BGP tables on these, it would be running as very basic edge router primarily just doing BGP. I know the RSP440 is EOL, but the plan would be to upgrade to RSP880 within a year. Thanks John