I purchased one of the Jack LaLanne juicers for $100 bucks for this purpose and after 4 uses on various fruits, I can't recommend it. You can't process the fruit without it leaking all over the counter top, getting stopped up and spitting half processed fruit out the spout. I spend more time unstopping it and cleaning up than I do processing the fruit. Total waste of money but if you insist on buying one, I've got one to sell!
If you have no worries about the seeds issue (which is a matter of taste anyway) I would recommend you use a high quality blender. But, even that comes at a price. So far, I have burned up two of them processing various stuff. I guess I'm just hard on electronics or something....