We've been using a couple of 650s for over a decade and I don't see a need to get anything bigger.
We've also had to work out a couple alignment/ejection bugs with some custom parts so if you can afford it you might want to consider a 1050 for less hassles.
Nick
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"A bullet sounds the same in any language"- S.G.
"If you ever hear it is another matter"-N.K.
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