Hello and welcome!
I dont owe an ion XE perse, but i have ungraded my ion a bit. And i can say that if you were to get an XE the there are 4 upgrades that i would instantly recommend.
a aftermarket trigger, an on/off ASA, Locing Feedneck and an 360QEV
However these can be brough over time, as you get more familiar with your XE.
However, the cost of a new XE is around £190-200 + all the upgrades
That would cost you around £250
£250 could get you for example a very good Second hand marker on here (like a PM7,8). or a brand new Proto SLG, or for a wee bit extra a Dangerous power G3.
heh, sorry to give yourself more options here. In any case, an XE is generally speaking a good starter marker, it will allow you to learn more about how they work and will let you have a good muck around with it. I know that ions and XE's are generally very reliable. However in the future you are likely to find yourself wanting to upgrade it. And here is where it gets expensive (if brought new
)
Are you wanting to maybe buy second hand? IF so check out the forums, or have a look at sites for a SLG, PMR or DP G3.
Bear in mind that i have only had an ion, i loved it, but quickly found myself wanting more (Hence the ups).
In any case, i hope someone can offer a more sound opinion on the three other markers i suggested.
All the best!
#Edit#
It would be usefull to tell us what field of paintball you are looking into, walkons, Sup'Air, Woodsball?