I have currently as my personal main climb saw a 338XPT NE. I like it, but yes the front air filter is a design fail. It does need more attention with cleaning than better designed saws. I do like it very much despite this. It has very good power (even better after a MM and a tune) for limbing and even topping up to around 10". If it gets bigger i get a bigger saw. The balance and feel are fine for me too.
I have the 338XPT because like you i do not have 200T money to spend. It was the best saw i could get at the time. It was very low hours and was only $300 to my door in Australia with 2 extra BNIB Stihl yellow chains. Gotta be happy with that when the RRP of a 338XPT here is still around $1149. Even after the T540XP arrived!
The 338XPT replaced a 334T. It was ok but just doesn't have the power of the 338XPT. It is basically the same design too. Same design and position air filter. Same saw body. The 334T was a 2001 build while the 338XPT was a 2010. Goes to show bad design ideas can stick around!
I also have a Echo 360T. It is ok. I have it now as my main backup for the 338XPT. Echo is a very overlooked brand in my opinion. Reliable and well built. I have owned and used a Echo 600p and it was a fine saw. In every way the equal of it's German and Swedish cousins! The 360T in no way is a real great climb saw though. It's a real disappointment compared to the new 355T. Sluggish throttle response and weak power. It is fine however for just small diameter limbing from the ground. I know, I really need to get a better second climb saw!
The 192T is an ok saw, but severely underpowered compared to a 200T. Or even my 338XPT for that matter! We tried one as a backup to the 200T at work. We could not get rid of it quick enough!
Don't get me wrong it is a well built saw, but after running a 200T it is very weak in power and torque. Only good for pruning very small diameter limbs.
Bottom line if you don't have the money to spend on a 200T but are going to spend Stihl money on a weak 192T it would be much more wisely be spent on an Echo 355T. You will have a far superior saw to the 192T also.
Just my 2 cents