To the OP - I went Nikon, because I was able to get a 2nd hand D70 cheap (it was a bit ago) and the 18-70 kit lens that came with the camera was both well regarded, and a useful range for me. I added a Tamron 24-200 (which doesn't get a lot of use) a Nikon 50mm f/1.8 (great fun, and the most bang for buck, imo) and a Tokina 12-24 (a brilliantly fun lens if you like perspective distortion, but decent at conventional landscapes too).
A others have said, look at the features of both, look at the lenses you might want, and don't discount getting something a bit older if you can get more for your money.
If you've not tried a compact rangefinder yet, give one a go - terrific little cameras. I like the
Canon Canonet best, but there used to be lots of nice ones around for £10 -£30 ish.
My favourite film camera is a Nikon F3HP, a fantastically well made 35mm SLR.
Indeed - the sharpness of Ilford HP5+, the character in the low ISO Adox CHS films...
I do wish there was still a place in Manchester that developed slide film - there's something really magical about those perfect little frames.