.... As a generalization, and leaving out the very first models/foundation versions of the SMLE. Try for ones produced between the Wars, as the fit and finish is better. Now, for accuracy , given the better sights and longer sight radius the No.4 ( The Long Branch being the top of the line.. better metal and quality control ) ... If the No.3 is your choice, and it really epitomizes the British infantry Rifle and peak of the Colonial Empire etc. the "best" are probably, the Lithgow's. Again, the ones produced between the Wars exhibit a better fit and finish and may even have the walnut "furniture" rather than the softer "Coach-wood/Boxwood " .... The P14 is right up there with the No.4 for accuracy, but, it doesn't really look like an Enfield, and doesn't have the 10 round magazine . .... anyway, basically, grab what you can, if worse comes to worse, you can always trade up to a better specimen ! Which is best really is a subjective choice, and there are just so many variants !!! Good Luck, and be warned, Lee Enfields are highly addictive !!! .... David K.