Has anyone tried the Cornilleau rubbers: Pilot Advance, Pilot Power? I don't know what they cost but I like the way they feel. I think they have that expensive Japanese/Euro rubber price though.
Saviga from Dawei is an interesting rubber. It is quite inexpensive ($16.00 a sheet or something like that), it is pretty darn good, especially for the price. It is a Chinese rubber even though it says made in Japan on it.
It plays like a strange cross between Chinese and Japanese rubber. It is a little slower than Tenergy but nice and spinny. The sponge is a little harder than Tenergy but it has some spring to it. The sponge has a different feel from a lot of Chinese rubbers. The topsheet is not very tacky, it is not "non-tacky" but it is not tacky. It plays quite well. The only problem with this rubber is that it is really heavy. That never bothers me, but I know it bothers some people.
The Gambler rubbers seem to a decent product for the price as well ($14.00 per sheet). They are no where near as good as Saviga, but they play more like a Euro/Japanese rubber, they do not feel like a Chinese rubber at all to me.
All that said, I still love Tenergy 05 and don't think anything really can compare.