This year I bought big packetss from Hazzards (because I was buying something else from them already) and medium-sized packets from The Seed Kingdom (because they were having a sale).
Then I got into Heather's tomato and pepper swap and got back 50-60 varieties, 10-20 seeds each.
Sub Artic Plenty . . .DET . . . very early & cool
Manitoba . . . DET . . . extra-early & cool
Stupice . . .INDET . . . ultra-early & cool
Glacier . . . DET or semi-det . ultra-early
Ildi (Cherry). . . INDET . . . extra-early
Vorlon - purple-black tomato
Black Russian - mahogany red, rich complex flavor - sweet with spicy and smoky undertones
Pruden's Purple. . .INDET . . . mid-season (small qty)
Jaune Flamme. . .INDET . . . mid-season French gourmet heirloom
Old Flame. . . INDET . . . mid-season
Marglobe. . . semi-det . . . mid-season
Omar's Lebanese .INDET . . . LATE . . . huge fruit
It's not like I can grow all these out, it's more like I've become a variety collector.
If you'd like to try any of the above, I have extra!