Who else does competent MPLS/BGP for SPs?

So we've got a pretty standard (if maybe shoddily implemented in parts) MP BGP network (RFC 4394 VPN-IPV4 style) built on Cisco ASRs.

We had high hopes at first of finding some newfangled whitebox solution, but every platform/os we looked at seemed to be too busy falling over themselves trying to dig into the DC market to bother with even the most fundamental SP features.

Since that seems like it's not going to be viable for some time (though I'd love to be proven wrong), what other vendors should we be looking at?

Juniper's obviously got chops in the area, but same problem as cisco... Expensive enough that if we go that route we'd be buying second hand BS and having to fight tooth and nail to get support on even 10% of what we deploy, etc...

Who else is even IN that market? Huawei and ALU? I know piss all about either one of them... how do they compare?