I really like the bars on my 2001 R1150GS although its obviously a deeply personal thing.
Have you tried rotating them a little in the clamps to move them back and forward, up and down? Also, perhaps consider that in conjunction with a riser kit to lift them an inch.
If you really want new bars then Zembruski motorcycles in Wales have (or at least used to have) a good selection of Renthal options. Tel: 01597 851 811. Be careful though because the switchgear is rubber-mounted to reduce vibration and you may not be able to do that with another make of bars.
Alternatively why not consider the standard bars from a R1150RT or similar?