Buy 2 cans
1 dedicated for rifles
1 dedicated for pistols
Id opt for an OSS helix 7.62 to guarentee it will run on a semi auto without much fuss. Honestly its not the quitest suppressor ever but it doesnt sound bad and still works well. Dont get hung up too much on sound signature, to the naked ear they will either sound good and not cause pain, or they will sound like crap and possibly be sharp on the ears.
I have 2 OSS cans, the old generation helix and the new helix QD, both 30 cal. I like them alot and they can handle any 30 cal round and smaller with no barrel restrictions.
For a pistol can I have a silencerco octane 9HD (theres now a 9HD 2.0, I dont know much about it). I dont recommend the octane or the 2.0 because they arent modular.
If you can squeeze it, get a modular can with a short and long configuration. You'll likely find later that you enjoy the shorter can in general, especially if you want it on a handgun.
Understanding your budget of $1400, I would buy the rifle can first, stash the remainder, and budget back up to afford the pistol suppressor.