The best one for me by far is And44's (Amp Factory) 59 Bassman. Absolutely nails Hendrix clean, hairy-clean and OD tones. Pop a fuzz face in front and it's Hendrix heaven.
Best £4.99 I've ever spent.
Other ones are:
Mesa TA-30 CruncTweed and Stomp_Lovepedal Tchu