My teacher also has a theory that an unplayed fiddle sulks, and will only open-up its tone for you if you play it every day, wipe off the rosin-dust regularly, and say nice things to it when it does well
I think that only applies to instruments that have some years under the belt.....
I would heartily agree on the bow thing though. A stentor isn't exactly the greatest of violins, but you're not going to make a lot of difference as a beginner by buying anything twice the price. However, bows are a different matter. I was really lucky soon after I seriously started the violin, in 1980, to pick up a German factory made bow for £18 in WE Hills, Great Missenden. Crucial thng was that the weight was right throughout the bow and had a decent bounce point - of course I didn't know that when we bought it, but it was lucky that I found it so when I started learning more advanced bow techniques.
Anyway, the more you spend on a bow, the more chance you have of having a half-decent one, although there is no guarantee. For more advnaced students, you can get complete rubbish even for £1000 (well maybe that's a bit harsh) and much better for £500 (well maybe that's a bit optimistic - but you get what I mean). For beginners, you're almost certainly in factory-made land, but it's the same story just at lower prices.
Look for
sticks that are straight when you look down the top ridge of them from heel to tip.
bows where the balance point is about 1/3 up from the heel - mine balances at 26 cm from adjuster tip on a 76cm bow, (and my spare bow at 26cm on a 74cm bow). To find the balance point, hold your two index fingers out in front of you like you are doing a dalek impression. Place the bow so it is resting on both. Bring the two fingers together. Where they touch, that is your balance point.
springiness - when the bow is wound taught (the stick is not touching the hairs but the stick is still gracefully curved), there is decent springiness. To test this, (erm how do I describe this), have your bow hold as previously decribed, but also rest the the bow hair itself on your left hand about 1/3 from the tip. Use your right hand index finger to press the wood and get the bow stick to touch the bow hair (in the bow middle). Then release - the springier the better.
OK. All of that is extremely crude (especially the springy test). And you would be much better off getting a teacher to help you choose. But in the absence of one, and in the absence of any learnt skills that woudl help you choose, it is a start.
Tommo