Millenium M50 Hang-On stands are Very nice. They use a Cam-Loc Receiver that allows you to use a one stand at many different locations. You can buy multiple Receivers and one stand and hunt in as many places as you like. The stand is VERY comfortable. One of the most comfortable on the market. Check them out! I hope this helps.
There's a story on how lone wolf got sued because a buyer hung the stand and sat in it for the first time, and the strap broke. He broke both legs, ribs, arms, ect. Just make sure when you buy a treestand, don't just go out there and use it. Take the time to inspect it. We've had tree steps break which now are recalled. They were the best steps, it just had a faulty strap. Just remember what I said about inspecting. It is a step not to overlook.
I swore by api for years mostly because of the value and the local shop carried them so they were the easiest for me to get. But I bought a muddy and already sold most of my api's and replaced them with muddy stands. 100x more comfortable and still quick, easy, and solid setup. Just my $.02
We have a lot of tree stands. We buy used as much as possible. The comfortable part is up to you. The smaller hang ons are pretty easy to use. We keep 10 or so of these for mobility and for hit or miss spots. The ladder stands are used in proven funnel areas. The more bulky expensive hang ons are put up in rut areas to keep comfortable for long sits. We use 3 straps on every stand no matter what it is. We take every stand down at the end of season. We repaint them and fix needed stuff every year. We only use climbing sticks.
As far as ease of use and setup, Lone Wolf is second to none. They are rock solid against the tree too, even trees with a little lean to them. I was always very hesitant about buying such an expensive treestand, but after biting the bullet and getting a LW I'm glad I did, it is an awesome stand.
you mentioned investing in multiple stands which sounds like you are buying stands to leave out. if so almost any TMA stand is quality and solid brands like big game, gorilla or field and stream can be had for $50-120.00. they are well built and made of steel. if you are looking for stands to carry in and out or move around a lot, you'll have to pay more and go with aluminum stands designed for mobility like lone wolf, gorilla (silver back), muddy etc. when it comes to mobility and weight yoi get what you pay for. i have been very happy with Lone wolf hang ons and gorilla silver backs. light and easy to climb and carry on your back with clombing sticks.
I used a LW for the first time 6 or 7 years ago. Bought my first one the following year. Sold all my other stands the following year. I don't see myself buying anything else anytime soon unless someone makes on of equal quality at a lower price.
I think I will pick up one of these. I seen the video on youtube and it seems to be easier than the Treestand Buddy
Lonewolf, Muddy and Millennium all have great products. Each have their pro's and cons. A lot of personal preference. If you hang the set and take it down every time you hunt then Lone wolf is probably best. For longer sits you defiantly want to buy the Comfort Tech seat. By far best treestand if you have to hump everything in. If you want to pre hang your sets on a budget yet ensure no one steals or uses your stand get the Millennium. I have the M50s and the M100. Both are excellent. The M100 is as close as you are going to get to the comfort of a climber. I do have some pet peeves about the M100 that it would appear they addressed with the M150 however the additional weight is preventing me from buying into it. Millennium makes two different receivers. One strap, and the other chain. I prefer the strap over the chain however the chain is best if you are going to leave the receiver up extended periods of time. I would say the Muddy's fall somewhere in-between the other two. This is my preferred stand to hang and leave full season. The seat is less then desirable, especially after the first year. Probably the best cost vs. value. They also will replace your straps for free I believe every three years. Not sure if Lonewolf does that or not.