I couldn't really say as I grow the Dutch varieties ( Gijnlym.Grolym Backlim) All pretty good. Maybe the latter is a little later and less prolific but is slightly more tender.
Washington is an American old fav. and Jersey Knight an improved hybrid with quite big purple spears I think. I'd probably chose the Knights
The old British stalwart Connover's Colossal is still a good value choice...a couple of old neglected plants gave me some lovely spears this year.
Really the most important thought is preparation. Direct your impatient energies into giving them the best possible home.... so when they are delivered in April they go in ASAP.... It is best not to buy them off the shelf (in packets) and It is also going to be cheaper to buy more ,rather than piece meal. I have never brought them in pots in the fern but I am trying with some I've raised from seed at the moment. I can't see why it won't work but my Intention is to pot them on and plant them early next year when I've got the bed completely weed free.
I have a good supplier but I can't lay my hands on the catalogue

I have heard good reports from grapes that have used the GYO advertised lot in Kent-as mentioned by Scallops.
Not a very definitive answer but I hope it helps. Good luck Its a good thing to be keen on!