The rifles you mention are superb choices, but I think you could make a more interesting choice. You already have a top-performing springer in the form of your TX200HC, so you can afford to get something more exotic.
One rifle that is incredibel value for money and a complete dream to own is the Feinwerkbau 300 recoilless match rifle. OK, it is only 6 ft/lbs with the standard spring but it is extremely accurate and easy to shoot. Think one-hole groups at 25 yards and a trigger that makes an AA CD seem like a gritty Spanish job. You can get a nice one for about 140 quid. A hi-power spring can boost the power to 8 ft/lbs or more.
Another is the Weihrauch HW55. This is also a match rifle, although not recoilless, and lighter than the FWB 300. It can be tuned to over 10 ft/lbs, and can be found in a deliciously comfortable Tyrolean stock. Priced at 150 or so depending on exact model. Venom used to sell this rifle as a super-accurate recoilling hunting rifle.
Both rifles have heaps of character and will outlast you!