I'm looking for an edge router with GE interfaces, full routing table and 4-byte ASN support.
This router will receive full BGP feeds from a couple of transit providers, and some small feeds from peering ISPs (10? 20? 30? don't know!); other required features are ACL, NetFlow, IPv6. It will have a 1GE link toward the core.
I identified the ASR 1000 series, but I would like to hear your opinion about the best model and, primarily, I would like to be sure they support 4-byte ASN.
Cisco Feature Navigator does not include 4-byte ASN support neither for RP1 nor for RP2. Another document  says this feature is included in rel. 3, but I could not find this release anywhere.
Supposing 4-Byte ASN are supported, can you see any reason I should chose ASR 1002 ESP5 instead of ASR 1002-F (fixed) - apart from SPA slots and higher throughput?
 Cisco IOS BGP 4-Byte ASN Support
Yes, XNC supports BGP 4B-ASN
RLS 3 is 12.2(33)XNC.
The platform choice depends on your expected growth in terms of Bw, ports,... Also you need to define your level of redudancy.
Your local Cisco account team is better positionned to discuss this subject with you.