Thanks mate
It's taken me ages to understand how a DSLR works so I don't want to start looking at different technology
When I say I don't want entry level, I mean I want full frame sensor not cropped, you can't get that on entry level bodies
What's your budget? A Full Frame digital will cost you a serious amount of wedge, and unless you are a "pro" why do you need pro level gear?
I've got probably 10-15 or so cameras, from original 60's Polaroids, Medium format film cameras, full frame film cameras, and a Micro Four Thirds Olympus OMD, and a Ricoh GR APS-C ( cropped) I've even made my own cameras, and stripped down and repaired film cameras, so believe me when I say, unless you are a professional photographer, or intending to be one, you don't need a full frame DSLR, if you buy a Pro level camera, you will need to start shelling out Pro lens prices for said camera, which are not cheap! What if you lose interest 6 months down the line?
http://www.thephoblographer.com/2015/07/05/why-no-one-needs-a-full-frame-camera/
There are plenty of cropped sensor cameras MFT ( micro four thirds ) APS-C, which are very, very good, the Sony cropped sensor A6300 is award winning, the Olympus MFT range ( OMD, and PEN) are also very good, and lightning fast, and take up a fraction of the size of a massive "full frame" DSLR.
Have you tried walking round all day with one of those hanging from your neck? Believe me, it's not fun!
It's not the camera, it's the person holding the camera, so my advice to you, would be go into a decent camera store and get some advice, hold the cameras, feel the weight, see how much they cost, you will be very surprised at the quality of some of the smaller sensor cameras, and even some pros are switching to mirrorless full frame Sony.
I Downsized from a big DSLR to MFT, and compact APS-C camera ( Ricoh GR) which fits in my jeans pocket if needed, and I never missed the DSLR, and I can carry 3 cameras, with 3 lenses, in less space than I did with one DSLR, but then again, I'm not a pro, the decision, as they say, is yours!