Vladimir,here are some suggestions for you ,
I told you I'd get back to you and I hope I can find the links I saved to transfer to here.
First,from Jeff Casey's in Canada,his list of red ones.
http://caseysheirloomtomatoes.ca/see...--red.html#top
for early mostly det ones
Bloody Butcher
Kimberly
Lyana
Mano
And my personal fave
http://t.tatianastomatobase.com:88/wiki/Danko
And now a really interesting one in my opinion.
http://t.tatianastomatobase.com:88/w...irdrie_Classic
This one I find very interesting since I was sent seeds by Stanley Zubrowski in Canada and he had crossed some earlies with Brandywine,the only earlies I remember were Glacier and Siberian,but there were three more.
He had done what most don't do and that's to use for instance Glacier as the female recipient and had pollinated with Brandywine pollen,and then did the reverse.
I grew all of them out and offered them in seed offer at the original Garden Web,now Houzz. Jeff Casey requested several of them,they needed to be grown out to stabilize them,he did and named one of them after his daughter and son, as indicated in the link above.
I hope that some I've noted above you will consider and might work well for you for next summer.
Carolyn,who forgot to mention that Tania has a HUGE long list of earlies, too long for me to go through and Jeff Casey also has the same but the ones I referred to are DET, and that's what you asked about since not all earlies are Det.