The F55 is a cheap nasty piece of poo
IMO. Pretty much any Canon EOS apart from the 5000 would be better than that. Spend another £15 and you can get this:
http://www.amazon.co.uk/exec/obidos/...442946-2648402
....it's a better camera in every respect. Don't worry about the fact that the lens only goes to 90mm instead of 100, you'll not notice the difference.
Alternatively look at secondhand, you could get something like an EOS 10, 100, or 50E (or you might even be able to get an EOS 5, not sure what they're worth nowadays). All are excellent cameras; even though they're fairly old now they're still a cut above the entry level stuff.
Rich :¬)