Once you use curved scissors you will know why they are so wonderful! Especially on poodles! Definitely worth the investment.
For clippers, I have two sets of Oster A5s. Have had them for over 10 years, since way back when I had Jamie. You all may laugh at this, but I groomed her for over a year by myself with only sewing scissors! I used kiddie Fiskar scissors for feet and other areas I needed small access for. Was a lot of work, but we both enjoyed it. I desparately wanted clippers, though, and since my grooming experience was *only* with Osters back then, I was only too glad to find the A5s when I did. Both were used...one from an auction (almost new though...maybe only used a couple times it looked like), and the other from a yard sale that I got for a song.....about a week after I'd gotten the ones at the auction! I couldn't complain.

Got both combined for less than half of what one new set would have cost! Only got the #10 blades with them, so had to order a few, and got Oster blades from Jeffers if I recall correctly. Since I've only had one poodle at a time, I have certainly not given them a workout, so they've worked fine for me.
I have no problem with the Osters, but the complaints about getting too hot and too heavy are common....so you can take that as pretty much spot on. They do make a "cool" wrap for the Osters, but that fattens them up a bit more and maybe that just says something about them. I've heard good comments from others about the Wahl's and Andi's clippers, so any one of those would be fine. If you have a chance to try all of the major brands out and see for yourself, all the better. But if not, any one will serve the purpose. Just weigh the pros/cons mentioned already in your decision. Just be sure to get "real" grooming clippers....most of which take the A5 type blades!