I would get an RV with slides. However, there are reasons people have for not wanting them. The main one I have heard is that "it's just one more thing to break". If you search around, people complain about them breaking.
That said, I think it is still worth it because after all the room inside and RV is very important.
Things "do" break and typically, when something does break, people will complain about them. On the other hand, when they work as designed, you won't hear people praising them. Human nature, I guess.
This subject has come up many times here on rv.net, and the general consensus is people typically favor having slides. Will they break? Maybe... I've had two rv's with slides and have never had a problem and as others have said, I'd never purchase another rv without them. In fact, my dw wants to upgrade to four slides from our present two.
Hope this helps
Ron & Sandie
2013 Tiffin Phaeton 42LH Cummins ISL 400hp
Toad: 2011 GMC Terrain SLT2
Tow Bar: Sterling AT
Toad Brakes: Unified by U.S. Gear
TPMS: Pressure Pro
Member of: GS, FMCA, Allegro
Previous two RV's had three slides. The extra space was fine, but had issues with both. Now I have no slides and beleive it or not, I am enjoying it. Less time setting up and it's only my wife and me and small dog, so it works for us.
Our 96 Southwind has no slides, I didn't want them when we bought an RV. It was plenty of room for two of us.
However, since our two grandsons came onboard full time our next RV will have a slide or two.
You must determine your own needs. An RV with no slides may be harder to sell. JMO
I have three slides and love them all. We can live with slides in or any combination but when they are out it is very roomy and wonderful. They really make a great difference in our comfort. Mine are on a 31 fort class A gas.