I've never used a brand new Stanley or Record No 7 so I'm not qualified to answer your question.
What I can say, because I've done it more than once, is that flattening the sole of a No 7 is a serious undertaking. The amount of warping you find in such a big plane is correspondingly daunting, plus there's the absolute size of the sole to be taken into account. Consequently if you want a flat true sole, one that's capable of reliably edge jointing boards so they make up into a table top with invisible glue lines, then you're looking at many hours of work. You can flatten off the sole of a No 4 well inside of thirty minutes, but a No 7 will still see you at it when the sun's going down! I suspect that's going to be true with both new or old Stanley and Records.
If long, invisible glue lines are on your agenda then personally a No 7 is where I'd dig deep and buy a Lie Nielsen, because then the sole will be true or nearly so. Either that or drop down to a No 6 or a No 5 1/2, either of which will get the job done perfectly well with pretty much all pieces of domestic furniture.
Just my 2p's worth.
Good luck!