better choice for high-speed, multi-clock FPGA?

Hi all -

I'm using an Actel AX250-2 (Axcelerator) in a new design which uses several 
phased clocks at about 250MHz.  The phase relationship is important and one 
of the reasons for the Actel choice.  They have a very fine adjustment for 
the PLLs and a low jitter measurement number.

I tried to get the AX250-3 part but they are having trouble with the 
manufacture process.  The -2 is fully capable of operation at 250MHz, 
though.

Is there a better/as good solution from some other manufacturer that anyone 
has experience with?  Is there anything available in FLASH that anyone has 
experience with?  Any positive or negative experiences would be appreciated.

TIA

Dave