The 1.60FX with the Perry VP-30 seems to be absolute standard, bullet proof set up over here.
Several have been competing with no probs only smiles all round.
In fact one user has retrofitted one to his 1.40RX bypassing the oiginal!
Works 110% and sure offers a cheap solution if the original and expensive RX pump FU's!
I know several have had and used Clines or similar, the fact that they're using Ye Olde Perry on the FX says something.
It just works.