If you have the $ then the F75 would be great, does have a lot of features and may be a lot to take in but at least you wont outgrow it.
The Fisher Goldbug is a very nice feeling machine and is about $950 with the 5" and 11"dd coil
I really liked the balance of the machine and felt like it would be easy to swing for hours.
A prospecting machine you can use at the beach.
I have the Garrett ATGOLD which I think is great
slightly more sensitive (really not that much better) than the Goldbug, has 40 steps of iron discrimination, a feature called Iron audio and it is waterproof to 3metres. Downside it doesn't have a notch function and no good at the beach in the wet sand or salt water.
The price over here is to high you're best to import yourself. Not the case with the Fishers -
http://www.puiakisupply.co.nz/ Robert is the fella to talk to.
It's one of those things every machine has the good and the not so good.
I'm pretty sure most of the following replies will say "Go Goldbug!"
Hope this helps.