thats a bit like asking how long is a piece of string.
SX and logic both allow you to create filter sweeps by using automation. Just enable the automation on the vsti, hit play and wiggle those nobs.
A lot of VSTI's offer an arp option.
V-STation
ARP 2600 (not surprisingly)
Albino
CS80
etc etc etc.. It all depends on what you are after. They all have different characters where sonund is concerned.
G