If you want the most accurate springer they are in this order:
Feinwerkbau 300S
Air Arms Pro Sport
Air Arms TX 200
Springers are very hold sensitive to be accurate shot after shot. The PCP guns are not.
Try to stay away from break barrel guns. If you want to spend some big bucks and get into airguns seriously then Pre-charged Pneumatic is the way to go. I have or have had all the high dollar PCP's and I have found the Steyr's are the most accurate.
I currently have a Steyr LG110 -HP in .22. Rapids are pretty accurate, and the Weirauch HW100 in either caliber is a fine benchrest gun because of the German quality and the configuration of the stock.
FX also makes some accurate rifles but they are finicky and parts are hard to find sometimes. I have about six FX guns and it seems like I'm always working at least one and have parts ordered year round.
Crossman makes a good entry level PCP that only has a 2,000 working pressure instead of 3,000 PSI plus on all other PCP's. I have my own compressor and carbon fiber tanks but they are not cheap.
The Crossman Discovery comes with a pump and is very easy to pump to only 2,000 PSI. You can get one with a pump for about $400.00 new.
The world of PCP rifles and pistol's is endless so it all comes down to your budget. Quality airguns can easily surpass the price of a rimfire or centerfire custom benchrest gun.
Here are just a few of my airguns. Most are custom.
Air Arms Pro Sport:
Beeman R-9:
Steyr 110 HP:
Weirauch HW100: