First time tomato grower

[brendang]

Hi all,
Here are a few pics of my tomato's growing in either 5 gallon or 7 gallon containers. I used good compost, sand and a peat moss mix that contains perlite and vermiculite. I've also been feeding them with a liquid fish emulsion every couple weeks but it's kind of pricey so i may be discontinuing further use of it. The tomatoes are either brandywine, austin's red pear or purple calabash. (I didn't label them) I guess i'll be able to tell them apart once they start putting on fruit. They are all heirloom varieties apparently and i sourced them from a local seed supplier. A few of the plants are really leaning over as i've only got scrawny 48" bamboo stakes supporting them. I think im going to be in trouble when the fruit starts putting on weight.
I'm happy to be a new member here.
I've enjoyed reading many of your post.
Take care,
Brendan
PS-im gardening in sunny (at the moment) Ontario, Canada