Well, I guess you're going to get every opinion possible here. Do the integrated, spend more on amps, spend more on speakers, etc. They're all right, of course, it all matters. Notice how we're trying to drive up your budget here -- "spend it all on speakers (or amp) now" -- the implication of course being that you'll later come up with the same amount to spend on the other piece later!
I also vote for the speakers. In particular, choose the speakers first. Then you'll know how much you have left to spend on the amp! And you can demo amps with your actual speakers (once you own them) which is important. So even if you buy them close together, I'd do speakers first.
I will say that I am not a big fan of integrateds. I shopped hard for integrateds about 5 years ago, and compared the Cambridge, NAD, NAD silver series, Arcam A60, Marantz, AR Complete, all head-to-head. In the end, I went with separates. I do think the AR is smoother and less forward than the Cambridge. But if you can save your pennies and buy separates with a $1000 (used) or $2000 (new) budget, it's a big leap up. Integrateds in that price range don't sound as good, at least not on my speakers. In the $500 range you'd need to stick with an integrated, but I just wonder if you will hear a significant enough difference over your current amp.
I also vote for the speakers. In particular, choose the speakers first. Then you'll know how much you have left to spend on the amp! And you can demo amps with your actual speakers (once you own them) which is important. So even if you buy them close together, I'd do speakers first.
I will say that I am not a big fan of integrateds. I shopped hard for integrateds about 5 years ago, and compared the Cambridge, NAD, NAD silver series, Arcam A60, Marantz, AR Complete, all head-to-head. In the end, I went with separates. I do think the AR is smoother and less forward than the Cambridge. But if you can save your pennies and buy separates with a $1000 (used) or $2000 (new) budget, it's a big leap up. Integrateds in that price range don't sound as good, at least not on my speakers. In the $500 range you'd need to stick with an integrated, but I just wonder if you will hear a significant enough difference over your current amp.