I do not care to recommend a brand.
I will however, address your question.
If what you want is good quality you will be looking for sensor size first.
Many cameras focus on mega pixel counts, but don't relate the metal pixel count to the sensor size.
A larger sensor will typically result in higher quality images.
This is why full frame and medium format cameras are so expensive.
More megapixels does not mean better quality.
Look for current processors when you compare them. There are many many cameras out there that are running very old processors. Some in the 15 year old range. The more current processors have advanced with technology and the older ones are still being sold in cameras that have been on the market for many years. They are brand new cameras, that were designed when the current tech was old. They are due for updates, but until those models are discontinued, they still sell them.
Since you want a removable lens camera, you will want to consider the lens options.
You may want to buy a body and an aftermarket lens, rather than a kit.
You can digiscope with everything. Sony and panasonic are making some very nice cameras that are small, light, have changeable lenses, and fit your description, but they are not cheap.
You are going to have to do some digging. Then watch the sales.
If you want the best place to look, hit B&H photos web site.
Use the search filters on the left side of the screen. You will find what you are looking for, you might not find it in the price you want.
If you are really serious, call them. Tell them what you want. They will give you the best options in your price range. Miraculously they will even understand digiscoping questions. Try to get that done at best buy. Wont happen. The sales guy will just look at you like you spoke another language.
