I'd definitely opt for a separate 2-channel pre and a decent AVP. Stereo sound quality is obviously the main benefit, but you're also then putting the majority of funds into what matters most rather than paying for expensive circuitry for surround channels, etc. And as someone else mentioned, when the inevitable necessary upgrade comes for the AVP you can do so with much less expense and keep the stereo sound intact. .
Another not insignificant benefit is your number of options. There are relatively so few AVPs that are truly good stereo performers, so what are the odds one will be optimal for your specific tastes and/or match well with your system? It's so limiting. Obviously with a stereo pre you have hundreds of choices unless you really need/want a HT bypass, but IMHO it's really not necessary and not worth compromising your choices.
If you do end up going the expensive AVP route I'd add the Classe to the list as I recall Kal seemed very impressed by it. Best of luck however you ultimately go.
Another not insignificant benefit is your number of options. There are relatively so few AVPs that are truly good stereo performers, so what are the odds one will be optimal for your specific tastes and/or match well with your system? It's so limiting. Obviously with a stereo pre you have hundreds of choices unless you really need/want a HT bypass, but IMHO it's really not necessary and not worth compromising your choices.
If you do end up going the expensive AVP route I'd add the Classe to the list as I recall Kal seemed very impressed by it. Best of luck however you ultimately go.