For ease of programming you can't go wrong with Foxpro... It easy for me to spend your money, I would look on Foxpros website for a refurbished Fury or Firestorm.. They both offer a horn and cone speaker built in... If any of the sounds you want to load are owls, having a choice of speakers will make you thank me later. Something to consider if you look at a Hellfire, a lot of song birds sounds are high pitched, a TOA speaker like a Hellfire tops out at 12KHtz. to be truly happy you might want to add either a planar tweeter or a button tweeter to fill in the gap above 12Khtz up to 20Khtz for tweety bird sounds.
On a side note, I have used Johnny Stewarts screech owl sound to good effect for calling song birds along field edges. My grand daughter lost a little enthusiasm for it after a great horned owl buzzed us at too close for comfort range looking for an easy snack one evening at dusk.
