Row Seed Flats source/opinions?

[huntoften]

I'm going to change my starting method this year and use the row seed flats instead of the 4 packs I've been using. I've used Craig's dense seed method for a few years now and just can't think of a better way to start a lot of plants than this.

I see that Johnny's has a "staggered" 20 row seed flat this year that's different that the one I saw last year.

http://www.johnnyseeds.com/p-8105-20...f-5-flats.aspx

Has anyone used these before? If so, are they fairly sturdy to use for a few years? Are there other places out there that have something comparable?

Any other recommendations? I plan on starting 2K-3K plants around 40-50 different varieties of tomatoes, 15 types of peppers, several types of basil and eggplant as well. Just looking for an efficient way to start them. Thanks for any advice.