If you do go ahead with looking at crosses you ned to be careful the breeder is doing adequate health testing. There seems to be a very common misconception that a lot of health tests aren't necessary when cross breeding however that's not the case.
Presuming you'd be looking at a first cross......
The springer parent should have had their hips scored with a result lower than 13 (the current breed average) and preferably as close to 0 as possible The final score is made up of two numbers, one for each hip, which should ideally be similar. For example if the dog's hip score is 7 then 3/4 is preferable to 1/6. They should also have a current BVA eye test (these are repeated annually) and a current BVA gonioscopy (these are repeated every three years). Finally, they should have had a DNA test for cord1-PRA.
The poodle (presuming the breeder is using a miniature) should have a current BVA eye test and have had DNA tests for prcd-PRA and macrothrombocytopenia. They should also have had a DNA test for von Willebrands disease type 1. It's very common for poodle cross breeders not to bother with this test, presumably because it's not present in most other breeds commonly used, however although rare it is possible for carriers to become symptomatic so it really is an absolute must.
That's the absolute minimum that should be done for this cross.
Ideally the poodle parent should also be hip scored with a score less than 10. For the springer parent DNA tests are also available for familial nephropathy, fucosidosis, hypomyelination and phosphofructokinase deficiency.
Whilst many of these conditions aren't present in both breeds and so puppies cannot be affected they could be carriers. Any decent breeder would want to know precisely what their puppies could potentially be carrying and would be keen to make use of all available DNA tests. If they're breeding crosses back to either parent breed then they should definitely be doing all available tests.
For any of the conditions for which DNA tests exist a dog can also be "clear by parentage" which means both their parents have been tested and were clear (or both were clear by parentage themselves) and so there's no chance of the dog being anything but clear.