This isn't fair I'm new to this site. I did just order some iron x paste...so I guess that makes it my favorite. lol If I got the snow foam I would have to order a foam cannon!!!
By far TRIX!!! Just got my back ordered bottle today and put it right to work!!! I previously used PPG DX 440 & DX 330 for tar removal but this stuff is much much better not to mention the added bonus of removing the Iron deposits from the wheels!!